Learn Android Development using youtube Tutorials and Courses
http://web.stanford.edu/class/cs193a/videos.shtml
http://www.vogella.com/tutorials/android.html
https://developer.android.com/training/index.html
https://www.udemy.com/learn-android-programming-from-scratch-beta/
Android App Development
Developing Android Apps Android Fundamentals
https://www.udacity.com/course/developing-android-apps–ud853
The Google I/O 2014 Android App
https://github.com/google/iosched
Programming Mobile Applications for Android Handheld Systems: Part 1
https://www.coursera.org/course/androidpart1
https://www.coursera.org/course/androidpart2
Testing for Android
Debugging & Testing Your Android Applications
Tutorial: Android Application Development – Publishing to Android Market
DesignBytes: Intro To Material Design
Google I/O 2014 – Material design: Structure and components
Google I/O 2014 – Material design: Visual style and imagery
Google I/O 2014 – Material design: Motion
Google I/O 2014 – Material witness: How Android material applications work
Google I/O 2014 – Material design in Google Play
Google I/O 2014 – Material design principles
Google I/O 2014 – Material science: Developing Android applications with material design
UX Design for Mobile Developers
Learn to Design a 5-Star Android App
https://www.udacity.com/course/ux-design-for-mobile-developers–ud849
Experience I/O anytime
https://www.google.com/events/io/io14videos
https://www.google.com/events/io/io14videos/95ea79a6-afbe-e311-b297-00155d5066d7