(Via Google)
For those, like myself, who have a desire to develop applications for the #1 mobile operating system, Google school is now in session. At the moment, 34 classes in 11 different sections cover more advanced topics from battery optimization to social network connectivity. Along with the classes there are some "hello world" tutorials are available to get the amateur started.
The classes work through problems people experience in Android Dev. Plenty of code examples and snippets hand walk the willing from class to class.
Continual additions to the program will be added. Google not only wants you to make apps, but to make the best possible.
Cabe