Kotlin looks magical, but most of it is possible because of it's powerful type system. Understand how it works and how to take advantage of it while coding.
Should you use RxJava or LiveData? Find out the differences on this talk.
Not using Kotlin yet? A few tips on why and how to make the switch from Java.
Learn how Views and ViewGroups are rendered on Android, and start creating your own Custom Views
How did I built an Android app for my university? Android-developer oriented talk about the development process.