Learning to Program in Android So Far

My main source for learn to program has been to follow Ed Burnete's book "Hello, Android."  It is a nice book.  However, it is for 1.5/1.6 and the Android is currently at 2.2.

Following this link:  http://stackoverflow.com/questions/949818/how-can-i-learn-android

Recommends the Developer's Guide on the Android site.

Also recommends several books.  

I think I will go through the Android site Developer's Guide first.