diff --git a/src/main/kotlin/eu/fosil/okupamicoche/entities/Repository.kt b/src/main/kotlin/eu/fosil/okupamicoche/entities/Repository.kt
new file mode 100644
index 0000000..f14e8c9
--- /dev/null
+++ b/src/main/kotlin/eu/fosil/okupamicoche/entities/Repository.kt
@@ -0,0 +1,7 @@
+package eu.fosil.okupamicoche.entities
+
+interface Repository<DATA, ID> {
+    fun save(data: DATA)
+    fun delete(data: DATA)
+    fun findById(id: ID): DATA
+}
\ No newline at end of file
diff --git a/src/main/kotlin/eu/fosil/okupamicoche/entities/User.kt b/src/main/kotlin/eu/fosil/okupamicoche/entities/User.kt
index e168424..86f6e54 100644
--- a/src/main/kotlin/eu/fosil/okupamicoche/entities/User.kt
+++ b/src/main/kotlin/eu/fosil/okupamicoche/entities/User.kt
@@ -9,4 +9,4 @@ class User(
     @Id @GeneratedValue var id: Long? = null,
     var matrixId: String,
     var name: String,
-    var email: String)
\ No newline at end of file
+    var email: String)
diff --git a/src/main/kotlin/eu/fosil/okupamicoche/usecases/user/CreateUser.kt b/src/main/kotlin/eu/fosil/okupamicoche/usecases/user/CreateUser.kt
new file mode 100644
index 0000000..ddaf99e
--- /dev/null
+++ b/src/main/kotlin/eu/fosil/okupamicoche/usecases/user/CreateUser.kt
@@ -0,0 +1,10 @@
+package eu.fosil.okupamicoche.usecases.user
+
+import eu.fosil.okupamicoche.entities.Repository
+import eu.fosil.okupamicoche.entities.User
+
+class CreateUser(private val userRepository: Repository<User, Long>) {
+    fun createUser(user: User) {
+        userRepository.save(user)
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/eu/fosil/okupamicoche/usecases/user/DeleteUser.kt b/src/main/kotlin/eu/fosil/okupamicoche/usecases/user/DeleteUser.kt
new file mode 100644
index 0000000..233120c
--- /dev/null
+++ b/src/main/kotlin/eu/fosil/okupamicoche/usecases/user/DeleteUser.kt
@@ -0,0 +1,12 @@
+package eu.fosil.okupamicoche.usecases.user
+
+import eu.fosil.okupamicoche.entities.Repository
+import eu.fosil.okupamicoche.entities.User
+
+class DeleteUser(private val userRepository: Repository<User, Long>) {
+    fun deleteUser(user: User) {
+        userRepository.delete(user)
+        // cancelarViajes()
+        // desapuntarseViajes()
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/eu/fosil/okupamicoche/usecases/user/EditUser.kt b/src/main/kotlin/eu/fosil/okupamicoche/usecases/user/EditUser.kt
new file mode 100644
index 0000000..f157d7c
--- /dev/null
+++ b/src/main/kotlin/eu/fosil/okupamicoche/usecases/user/EditUser.kt
@@ -0,0 +1,10 @@
+package eu.fosil.okupamicoche.usecases.user
+
+import eu.fosil.okupamicoche.entities.Repository
+import eu.fosil.okupamicoche.entities.User
+
+class EditUser(private val userRepository: Repository<User, Long>) {
+    fun editUser(user: User) {
+        userRepository.save(user)
+    }
+}
\ No newline at end of file