Building a Responsive UI in Android (Android Development Patterns)
Android Layout Design Tutorial | Android UI Design Explained | Android Studio Tutorial | Edureka
Common Design Patterns
Android Design Guidelines (in Hindi)
10 Rules of Good UI Design to Follow
Basics of UI Design for Mobile Apps - Artboard Size, Screen Density and Resolution for Beginners
Figma Tutorial - A Free UI Design/Prototyping Tool. It's awesome.
7 Minutes UI Design to Android XML