• Official website https://developer.android.com/
• Codelabs https://codelabs.developers.google.com/
• Youtube https://www.youtube.com/user/androiddevelopers
• Android developers Blog https://android-developers.googleblog.com/

• https://kotlinlang.org/
• https://developer.android.com/kotlin

• Github/Android https://github.com/android
• Android Architecture Blueprints v2 https://github.com/android/architecture-samples
• Android Architecture Components samples https://github.com/android/architecture-components-samples

• Training https://developer.android.com/courses
• Learn Kotlin for Android https://developer.android.com/kotlin/campaign/learn

Udacity

• https://classroom.udacity.com/courses/ud9012
• https://www.udacity.com/course/developing-android-apps-with-kotlin--ud9012
• https://classroom.udacity.com/courses/ud940
• https://www.udacity.com/course/advanced-android-with-kotlin--ud940

Coursera

• Kotlin for Java Developers https://www.coursera.org/learn/kotlin-for-java-developers

Google Play Academy

• https://playacademy.exceedlms.com/student/catalog

Android Kotlin Fundamentals Course

• https://codelabs.developers.google.com/android-kotlin-fundamentals/

Youtube Android Developers channel

• https://www.youtube.com/user/androiddevelopers

Android Dev Summit 2019

• https://www.youtube.com/playlist?list=PLWz5rJ2EKKc_xXXubDti2eRnIKU0p7wHd

Kotlin Conf 2019

• https://kotlinconf.com/2019/talks/

Kotlin/Everywhere Buenos Aires 2019

• https://www.youtube.com/playlist?list=PLCDIutLaQECNAam6ZfjWkV67RuUIbYt14

Android 11 LATAM

• https://www.youtube.com/playlist?list=PLXStRk2Mx2qxVIhSiT0lePSl84NhSPgog

• Android Data Binding Codelab https://github.com/googlecodelabs/android-databinding
• Android Developer Fundamentals Course https://codelabs.developers.google.com/android-training/
• Android codelabs https://codelabs.developers.google.com/?cat=Android

• Material Design https://material.io/
• Icons https://material.io/resources/icons/
• Iconfinder https://www.iconfinder.com/
• Material design palette https://www.materialpalette.com/
• Flaticon https://www.flaticon.com/

• Fundamentals https://developer.android.com/training/testing/fundamentals
• Codelab https://codelabs.developers.google.com/codelabs/advanced-android-kotlin-training-testing-basics/index.html?index=..%2F..index#0
• Examples https://github.com/android/testing-samples

• Publish your app https://developer.android.com/studio/publish

• Android App Bundles https://developer.android.com/guide/app-bundle

• APP privacy policy generator https://app-privacy-policy-generator.firebaseapp.com/

• Android Developer Roadmap 2020 https://github.com/mobile-roadmap/android-developer-roadmap

• Android Table of Elements https://www.androidelements.com/

Retrofit

• https://square.github.io/retrofit/
• https://futurestud.io/tutorials/tag/retrofit

Volley

• https://developer.android.com/training/volley