Material Design

1) Recycle View
Implements recycle view with CardView

https://github.com/rdrobinson3/WelcomeToL

2) Navigation Drawer
https://github.com/lewisjdeane/L-Navigation-Drawer

3) Api Demo Source Code
https://android.googlesource.com/platform/development/+/master/samples/

https://github.com/kesenhoo/AndroidApiDemo

4)
Shared Element Animation Transition example adapted for Fragments.
https://github.com/yrizk/FragmentAnimations