~ The best way to learn is to learn from the best.
Google Android Training: This ia an official Google Android training site with a number of useful classes grouped by topics.
Kotlin Tutorial: A series of complete step-by-step tutorials to walk you through how to accomplish different tasks in Kotlin, from Getting Started to writing Android applications and more.
Android Discuss: This is a discussion group hosted by Google using the Google service.
Various aspects of Android programming are discussing here.
Stack Overflow: This is a collaboratively edited question and answer site for Android developers.
If you have a question about Android, you may try to looking for similar questions and answers may also be provided.
