diff --git a/.idea/deploymentTargetDropDown.xml b/.idea/deploymentTargetDropDown.xml
index 7d885b6..0c0c338 100644
--- a/.idea/deploymentTargetDropDown.xml
+++ b/.idea/deploymentTargetDropDown.xml
@@ -3,20 +3,7 @@
   <component name="deploymentTargetDropDown">
     <value>
       <entry key="app">
-        <State>
-          <runningDeviceTargetSelectedWithDropDown>
-            <Target>
-              <type value="RUNNING_DEVICE_TARGET" />
-              <deviceKey>
-                <Key>
-                  <type value="VIRTUAL_DEVICE_PATH" />
-                  <value value="C:\Users\USER\.android\avd\Pixel_3a_API_34_extension_level_7_x86_64.avd" />
-                </Key>
-              </deviceKey>
-            </Target>
-          </runningDeviceTargetSelectedWithDropDown>
-          <timeTargetWasSelectedWithDropDown value="2024-05-02T15:23:11.192908200Z" />
-        </State>
+        <State />
       </entry>
     </value>
   </component>
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 6ba360d..8e3077e 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -36,6 +36,9 @@ android {
     viewBinding {
         enable = true
     }
+    buildFeatures {
+        viewBinding = true
+    }
 }
 
 dependencies {
@@ -45,6 +48,10 @@ dependencies {
     implementation("com.google.android.material:material:1.11.0")
     implementation("androidx.constraintlayout:constraintlayout:2.1.4")
     implementation("androidx.activity:activity:1.8.0")
+    implementation("androidx.lifecycle:lifecycle-livedata-ktx:2.6.1")
+    implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.6.1")
+    implementation("androidx.navigation:navigation-fragment-ktx:2.6.0")
+    implementation("androidx.navigation:navigation-ui-ktx:2.6.0")
     testImplementation("junit:junit:4.13.2")
     androidTestImplementation("androidx.test.ext:junit:1.1.5")
     androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 7e8c7fa..01888ea 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -2,9 +2,9 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
-¿
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
@@ -15,6 +15,10 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.MedicalHealth"
         tools:targetApi="31">
+        <activity
+            android:name=".PrincipalActivity"
+            android:exported="false"
+            android:label="@string/title_activity_principal" />
         <activity
             android:name=".RecetaActivity"
             android:exported="false" />
diff --git a/app/src/main/java/com/terratenientes/medicalhealth/MainActivity.kt b/app/src/main/java/com/terratenientes/medicalhealth/MainActivity.kt
index d62b115..6d709cc 100644
--- a/app/src/main/java/com/terratenientes/medicalhealth/MainActivity.kt
+++ b/app/src/main/java/com/terratenientes/medicalhealth/MainActivity.kt
@@ -23,7 +23,7 @@ class MainActivity : AppCompatActivity() {
             var res=db.validarDatos(binding.tvUsuario.text.toString(),binding.tvContrasena.text.toString())
             if(res==true){
                 Toast.makeText(this@MainActivity,"VALIDADO",Toast.LENGTH_LONG).show()
-                val intent = Intent(this@MainActivity, AgregarActivity::class.java)
+                val intent = Intent(this@MainActivity, PrincipalActivity::class.java)
                 startActivity(intent)
             }else{
                 Toast.makeText(this@MainActivity," NO VALIDADO",Toast.LENGTH_LONG).show()
diff --git a/app/src/main/java/com/terratenientes/medicalhealth/PrincipalActivity.kt b/app/src/main/java/com/terratenientes/medicalhealth/PrincipalActivity.kt
new file mode 100644
index 0000000..039966f
--- /dev/null
+++ b/app/src/main/java/com/terratenientes/medicalhealth/PrincipalActivity.kt
@@ -0,0 +1,35 @@
+package com.terratenientes.medicalhealth
+
+import android.os.Bundle
+import com.google.android.material.bottomnavigation.BottomNavigationView
+import androidx.appcompat.app.AppCompatActivity
+import androidx.navigation.findNavController
+import androidx.navigation.ui.AppBarConfiguration
+import androidx.navigation.ui.setupActionBarWithNavController
+import androidx.navigation.ui.setupWithNavController
+import com.terratenientes.medicalhealth.databinding.ActivityPrincipalBinding
+
+class PrincipalActivity : AppCompatActivity() {
+
+    private lateinit var binding: ActivityPrincipalBinding
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        binding = ActivityPrincipalBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        val navView: BottomNavigationView = binding.navView
+
+        val navController = findNavController(R.id.nav_host_fragment_activity_principal)
+        // Passing each menu ID as a set of Ids because each
+        // menu should be considered as top level destinations.
+        val appBarConfiguration = AppBarConfiguration(
+            setOf(
+                R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_notifications
+            )
+        )
+        setupActionBarWithNavController(navController, appBarConfiguration)
+        navView.setupWithNavController(navController)
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/terratenientes/medicalhealth/RegistrarDActivity.kt b/app/src/main/java/com/terratenientes/medicalhealth/RegistrarDActivity.kt
index 005bd1d..07f5f96 100644
--- a/app/src/main/java/com/terratenientes/medicalhealth/RegistrarDActivity.kt
+++ b/app/src/main/java/com/terratenientes/medicalhealth/RegistrarDActivity.kt
@@ -30,5 +30,6 @@ class RegistrarDActivity : AppCompatActivity() {
         val usuario= Doctor(cedula,nombre,apellido,telefono,domicilio.toInt())
         db.agregarDoctores(usuario,contrasena)
         Toast.makeText(this@RegistrarDActivity,"USUARIO AGREGADO",Toast.LENGTH_LONG).show()
+        finish()
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/terratenientes/medicalhealth/ui/dashboard/DashboardFragment.kt b/app/src/main/java/com/terratenientes/medicalhealth/ui/dashboard/DashboardFragment.kt
new file mode 100644
index 0000000..229a044
--- /dev/null
+++ b/app/src/main/java/com/terratenientes/medicalhealth/ui/dashboard/DashboardFragment.kt
@@ -0,0 +1,42 @@
+package com.terratenientes.medicalhealth.ui.dashboard
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.ViewModelProvider
+import com.terratenientes.medicalhealth.databinding.FragmentDashboardBinding
+
+class DashboardFragment : Fragment() {
+
+    private var _binding: FragmentDashboardBinding? = null
+
+    // This property is only valid between onCreateView and
+    // onDestroyView.
+    private val binding get() = _binding!!
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        val dashboardViewModel =
+            ViewModelProvider(this).get(DashboardViewModel::class.java)
+
+        _binding = FragmentDashboardBinding.inflate(inflater, container, false)
+        val root: View = binding.root
+
+        val textView: TextView = binding.textDashboard
+        dashboardViewModel.text.observe(viewLifecycleOwner) {
+            textView.text = it
+        }
+        return root
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/terratenientes/medicalhealth/ui/dashboard/DashboardViewModel.kt b/app/src/main/java/com/terratenientes/medicalhealth/ui/dashboard/DashboardViewModel.kt
new file mode 100644
index 0000000..48f7ba5
--- /dev/null
+++ b/app/src/main/java/com/terratenientes/medicalhealth/ui/dashboard/DashboardViewModel.kt
@@ -0,0 +1,13 @@
+package com.terratenientes.medicalhealth.ui.dashboard
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+
+class DashboardViewModel : ViewModel() {
+
+    private val _text = MutableLiveData<String>().apply {
+        value = "This is dashboard Fragment"
+    }
+    val text: LiveData<String> = _text
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/terratenientes/medicalhealth/ui/home/HomeFragment.kt b/app/src/main/java/com/terratenientes/medicalhealth/ui/home/HomeFragment.kt
new file mode 100644
index 0000000..40e9c99
--- /dev/null
+++ b/app/src/main/java/com/terratenientes/medicalhealth/ui/home/HomeFragment.kt
@@ -0,0 +1,42 @@
+package com.terratenientes.medicalhealth.ui.home
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.ViewModelProvider
+import com.terratenientes.medicalhealth.databinding.FragmentHomeBinding
+
+class HomeFragment : Fragment() {
+
+    private var _binding: FragmentHomeBinding? = null
+
+    // This property is only valid between onCreateView and
+    // onDestroyView.
+    private val binding get() = _binding!!
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        val homeViewModel =
+            ViewModelProvider(this).get(HomeViewModel::class.java)
+
+        _binding = FragmentHomeBinding.inflate(inflater, container, false)
+        val root: View = binding.root
+
+        val textView: TextView = binding.textHome
+        homeViewModel.text.observe(viewLifecycleOwner) {
+            textView.text = it
+        }
+        return root
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/terratenientes/medicalhealth/ui/home/HomeViewModel.kt b/app/src/main/java/com/terratenientes/medicalhealth/ui/home/HomeViewModel.kt
new file mode 100644
index 0000000..a4b8e5d
--- /dev/null
+++ b/app/src/main/java/com/terratenientes/medicalhealth/ui/home/HomeViewModel.kt
@@ -0,0 +1,13 @@
+package com.terratenientes.medicalhealth.ui.home
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+
+class HomeViewModel : ViewModel() {
+
+    private val _text = MutableLiveData<String>().apply {
+        value = "This is home Fragment"
+    }
+    val text: LiveData<String> = _text
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/terratenientes/medicalhealth/ui/notifications/NotificationsFragment.kt b/app/src/main/java/com/terratenientes/medicalhealth/ui/notifications/NotificationsFragment.kt
new file mode 100644
index 0000000..3c3743b
--- /dev/null
+++ b/app/src/main/java/com/terratenientes/medicalhealth/ui/notifications/NotificationsFragment.kt
@@ -0,0 +1,42 @@
+package com.terratenientes.medicalhealth.ui.notifications
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.ViewModelProvider
+import com.terratenientes.medicalhealth.databinding.FragmentNotificationsBinding
+
+class NotificationsFragment : Fragment() {
+
+    private var _binding: FragmentNotificationsBinding? = null
+
+    // This property is only valid between onCreateView and
+    // onDestroyView.
+    private val binding get() = _binding!!
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        val notificationsViewModel =
+            ViewModelProvider(this).get(NotificationsViewModel::class.java)
+
+        _binding = FragmentNotificationsBinding.inflate(inflater, container, false)
+        val root: View = binding.root
+
+        val textView: TextView = binding.textNotifications
+        notificationsViewModel.text.observe(viewLifecycleOwner) {
+            textView.text = it
+        }
+        return root
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/terratenientes/medicalhealth/ui/notifications/NotificationsViewModel.kt b/app/src/main/java/com/terratenientes/medicalhealth/ui/notifications/NotificationsViewModel.kt
new file mode 100644
index 0000000..07b315d
--- /dev/null
+++ b/app/src/main/java/com/terratenientes/medicalhealth/ui/notifications/NotificationsViewModel.kt
@@ -0,0 +1,13 @@
+package com.terratenientes.medicalhealth.ui.notifications
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+
+class NotificationsViewModel : ViewModel() {
+
+    private val _text = MutableLiveData<String>().apply {
+        value = "This is notifications Fragment"
+    }
+    val text: LiveData<String> = _text
+}
\ No newline at end of file
diff --git a/app/src/main/res/drawable/ic_dashboard_black_24dp.xml b/app/src/main/res/drawable/ic_dashboard_black_24dp.xml
new file mode 100644
index 0000000..46fc8de
--- /dev/null
+++ b/app/src/main/res/drawable/ic_dashboard_black_24dp.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M3,13h8L11,3L3,3v10zM3,21h8v-6L3,15v6zM13,21h8L21,11h-8v10zM13,3v6h8L21,3h-8z" />
+</vector>
diff --git a/app/src/main/res/drawable/ic_home_black_24dp.xml b/app/src/main/res/drawable/ic_home_black_24dp.xml
new file mode 100644
index 0000000..f8bb0b5
--- /dev/null
+++ b/app/src/main/res/drawable/ic_home_black_24dp.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M10,20v-6h4v6h5v-8h3L12,3 2,12h3v8z" />
+</vector>
diff --git a/app/src/main/res/drawable/ic_notifications_black_24dp.xml b/app/src/main/res/drawable/ic_notifications_black_24dp.xml
new file mode 100644
index 0000000..78b75c3
--- /dev/null
+++ b/app/src/main/res/drawable/ic_notifications_black_24dp.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M12,22c1.1,0 2,-0.9 2,-2h-4c0,1.1 0.89,2 2,2zM18,16v-5c0,-3.07 -1.64,-5.64 -4.5,-6.32L13.5,4c0,-0.83 -0.67,-1.5 -1.5,-1.5s-1.5,0.67 -1.5,1.5v0.68C7.63,5.36 6,7.92 6,11v5l-2,2v1h16v-1l-2,-2z" />
+</vector>
diff --git a/app/src/main/res/layout/activity_modificar.xml b/app/src/main/res/layout/activity_modificar.xml
index b1dd6d6..f7c5f06 100644
--- a/app/src/main/res/layout/activity_modificar.xml
+++ b/app/src/main/res/layout/activity_modificar.xml
@@ -51,13 +51,14 @@
         android:id="@+id/et_nombre"
         android:layout_width="match_parent"
         android:layout_height="50sp"
-        android:layout_marginTop="40dp"
         android:layout_marginStart="40dp"
+        android:layout_marginTop="40dp"
         android:layout_marginEnd="40dp"
-        android:paddingStart="10dp"
         android:background="@drawable/radius_tv"
-        android:textColor="#212121"
-        android:hint="@string/ht_nombre"/>
+        android:hint="@string/ht_nombre"
+        android:paddingStart="10dp"
+        android:textColor="#212121" />
+
     <EditText
         android:id="@+id/et_apellido_paterno"
         android:layout_width="match_parent"
diff --git a/app/src/main/res/layout/activity_principal.xml b/app/src/main/res/layout/activity_principal.xml
new file mode 100644
index 0000000..baf59bb
--- /dev/null
+++ b/app/src/main/res/layout/activity_principal.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/container"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingTop="?attr/actionBarSize">
+
+    <com.google.android.material.bottomnavigation.BottomNavigationView
+        android:id="@+id/nav_view"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="0dp"
+        android:layout_marginEnd="0dp"
+        android:background="?android:attr/windowBackground"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:menu="@menu/bottom_nav_menu" />
+
+    <fragment
+        android:id="@+id/nav_host_fragment_activity_principal"
+        android:name="androidx.navigation.fragment.NavHostFragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:defaultNavHost="true"
+        app:layout_constraintBottom_toTopOf="@id/nav_view"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:navGraph="@navigation/mobile_navigation" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_registrar_dactivity.xml b/app/src/main/res/layout/activity_registrar_dactivity.xml
index 346913b..05d0ddc 100644
--- a/app/src/main/res/layout/activity_registrar_dactivity.xml
+++ b/app/src/main/res/layout/activity_registrar_dactivity.xml
@@ -23,18 +23,24 @@
         android:layout_marginTop="30dp"
         android:layout_width="300dp"
         android:layout_gravity="center_horizontal"
-        android:layout_height="wrap_content"
+        android:layout_height="50sp"
         android:hint="@string/et_cedula_registrar"
         android:id="@+id/et_cedela_registro"
+        android:paddingStart="10dp"
+        android:layout_marginBottom="20dp"
+        android:background="@drawable/radius_tv"
         android:textColorHint="@color/black"
         />
 
     <EditText
         android:layout_width="300dp"
-        android:layout_height="wrap_content"
+        android:layout_height="50sp"
         android:hint="@string/et_nombre_registrar"
         android:id="@+id/et_nombre_registro"
         android:textColorHint="@color/black"
+        android:paddingStart="10dp"
+        android:layout_marginBottom="20dp"
+        android:background="@drawable/radius_tv"
         android:layout_gravity="center_horizontal"
 
         />
@@ -43,9 +49,12 @@
         android:layout_gravity="center_horizontal"
 
         android:layout_width="300dp"
-        android:layout_height="wrap_content"
+        android:layout_height="50sp"
         android:hint="@string/et_apellido_registrar"
         android:id="@+id/et_apellido_registro"
+        android:paddingStart="10dp"
+        android:layout_marginBottom="20dp"
+        android:background="@drawable/radius_tv"
         android:textColorHint="@color/black"
         />
 
@@ -53,18 +62,24 @@
         android:layout_gravity="center_horizontal"
 
         android:layout_width="300dp"
-        android:layout_height="wrap_content"
+        android:layout_height="50sp"
         android:hint="@string/et_telefono_registrar"
         android:id="@+id/et_telefono_registo"
+        android:paddingStart="10dp"
+        android:layout_marginBottom="20dp"
+        android:background="@drawable/radius_tv"
         android:textColorHint="@color/black"
         />
     <EditText
         android:layout_gravity="center_horizontal"
         android:layout_width="300dp"
-        android:layout_height="wrap_content"
+        android:layout_height="50sp"
         android:hint="@string/et_domicilio_registrar"
         android:id="@+id/et_domicilio"
         android:textColorHint="@color/black"
+        android:paddingStart="10dp"
+        android:layout_marginBottom="20dp"
+        android:background="@drawable/radius_tv"
         android:inputType="number"
         android:maxLength="2"
         />
@@ -73,9 +88,12 @@
         android:layout_gravity="center_horizontal"
         android:id="@+id/et_contrasena_registro"
         android:layout_width="300dp"
-        android:layout_height="wrap_content"
+        android:layout_height="50sp"
         android:ems="10"
         android:inputType="textPassword"
+        android:paddingStart="10dp"
+        android:layout_marginBottom="20dp"
+        android:background="@drawable/radius_tv"
         android:hint="@string/et_contrasena_registrar"
         android:textColorHint="@color/black"
         />
@@ -84,7 +102,7 @@
         android:layout_gravity="center_horizontal"
         android:layout_width="300dp"
         android:id="@+id/btn_registrar_"
-        android:layout_height="wrap_content"
+        android:layout_height="50sp"
         android:text="@string/btn_registrar_activity"
         android:backgroundTint="@color/primaryColor"
 
diff --git a/app/src/main/res/layout/fragment_dashboard.xml b/app/src/main/res/layout/fragment_dashboard.xml
new file mode 100644
index 0000000..166ab0e
--- /dev/null
+++ b/app/src/main/res/layout/fragment_dashboard.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.dashboard.DashboardFragment">
+
+    <TextView
+        android:id="@+id/text_dashboard"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="8dp"
+        android:textAlignment="center"
+        android:textSize="20sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_home.xml b/app/src/main/res/layout/fragment_home.xml
new file mode 100644
index 0000000..f3d9b08
--- /dev/null
+++ b/app/src/main/res/layout/fragment_home.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.home.HomeFragment">
+
+    <TextView
+        android:id="@+id/text_home"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="8dp"
+        android:textAlignment="center"
+        android:textSize="20sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_notifications.xml b/app/src/main/res/layout/fragment_notifications.xml
new file mode 100644
index 0000000..d417935
--- /dev/null
+++ b/app/src/main/res/layout/fragment_notifications.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.notifications.NotificationsFragment">
+
+    <TextView
+        android:id="@+id/text_notifications"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="8dp"
+        android:textAlignment="center"
+        android:textSize="20sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/menu/bottom_nav_menu.xml b/app/src/main/res/menu/bottom_nav_menu.xml
new file mode 100644
index 0000000..fb6d040
--- /dev/null
+++ b/app/src/main/res/menu/bottom_nav_menu.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item
+        android:id="@+id/navigation_home"
+        android:icon="@drawable/ic_home_black_24dp"
+        android:title="@string/title_home" />
+
+    <item
+        android:id="@+id/navigation_dashboard"
+        android:icon="@drawable/ic_dashboard_black_24dp"
+        android:title="@string/title_dashboard" />
+
+    <item
+        android:id="@+id/navigation_notifications"
+        android:icon="@drawable/ic_notifications_black_24dp"
+        android:title="@string/title_notifications" />
+
+</menu>
\ No newline at end of file
diff --git a/app/src/main/res/navigation/mobile_navigation.xml b/app/src/main/res/navigation/mobile_navigation.xml
new file mode 100644
index 0000000..c3d1a4d
--- /dev/null
+++ b/app/src/main/res/navigation/mobile_navigation.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/mobile_navigation"
+    app:startDestination="@+id/navigation_home">
+
+    <fragment
+        android:id="@+id/navigation_home"
+        android:name="com.terratenientes.medicalhealth.ui.home.HomeFragment"
+        android:label="@string/title_home"
+        tools:layout="@layout/fragment_home" />
+
+    <fragment
+        android:id="@+id/navigation_dashboard"
+        android:name="com.terratenientes.medicalhealth.ui.dashboard.DashboardFragment"
+        android:label="@string/title_dashboard"
+        tools:layout="@layout/fragment_dashboard" />
+
+    <fragment
+        android:id="@+id/navigation_notifications"
+        android:name="com.terratenientes.medicalhealth.ui.notifications.NotificationsFragment"
+        android:label="@string/title_notifications"
+        tools:layout="@layout/fragment_notifications" />
+</navigation>
\ No newline at end of file
diff --git a/app/src/main/res/values/dimens.xml b/app/src/main/res/values/dimens.xml
new file mode 100644
index 0000000..e00c2dd
--- /dev/null
+++ b/app/src/main/res/values/dimens.xml
@@ -0,0 +1,5 @@
+<resources>
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+</resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index d34bb43..0b49efa 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -47,5 +47,9 @@
     <string name="receta_peso">Peso del paciente KG</string>
     <string name="btn_agregar_receta">Agregar Receta</string>
     <string name="btn_ayuda_receta">Ayuda</string>
+    <string name="title_activity_principal">PrincipalActivity</string>
+    <string name="title_home">Home</string>
+    <string name="title_dashboard">Dashboard</string>
+    <string name="title_notifications">Notifications</string>
 
 </resources>
\ No newline at end of file