I have used this book and it has helped a lot http://www.amazon.com/Professional-Android-Application-Development-Programmer/dp/0470565527 http://www.amazon.com/

I have used this book and it has helped a lot http://www.amazon.com/Professional-Android-Application-Development-Programmer/dp/0470565527 http://www.amazon.com/Professional-Android-Application-Devel... I heard good things about this http://commonsware.com/ http://commonsware.com/ so you might want to check it out.