How do I get started with Android app development?
There are many online tutorials helping people get started with Android app development. The most up to date site is at Android's Build your first app page. Once familiar with the simple Android app development process, check out Basics to get tablet specific APIs.
Android's Official FAQ and Support Sites
Overview – Information on the Android API
Basics – Details on tablet specific Android API
Reference – Links to the complete Android API packages and classes
Sample Code – Full Android API demo sample