I read through and got a lot out of O'Reilly's "Programming Amazon EC2". It is short and sweet with some good real world examples.<p><a href="http://www.amazon.com/Programming-Amazon-EC2-Jurg-Vliet/dp/1449393683/ref=sr_1_1?ie=UTF8&qid=1314020011&sr=8-1" rel="nofollow">http://www.amazon.com/Programming-Amazon-EC2-Jurg-Vliet/dp/1...</a>