I dont know about books, but if you google stericson android tools project you can find, somewhere, his google code page of codes and tools he and other developers have found that maximize efficiency. Just for when you get theregmurphy said:purchased for my wife, I'm not ready to give up my OGD1. very cool phone. wish it had root. I am going to take advice of brttwrd and write a nice note to Htc. also, anyone here recomend a good android developmet book? I believe I have a couple of great ideas only on paper now. need help with development.