Here's 4 books I have read. Pick one. It's a great read:
Crisis of Conscience by Raymond Franz. It's an insider's look at somebody who left the Governing Body and the reasons he left.
In Search of Christian Freedom by Raymond Franz. It opens your mind to what Jesus really preached and how Christians are expected to act toward others.
The Gentile Times Reconsidered by Carl O Jonsson. If you're into history, this is a great read. It shows how stubborn the Governing Body is when it comes to actual science and fact.
Sign of the Last Days When by Carl O Jonsson. This one shows how misguided the Governing Body is when it comes to fact and what they will do to bend their "truth".
I've read every article here: http://corior.blogspot.com/ Pick and choose what appeals to you.
Currently I'm reading 1984. A little less JW-specific, but quite relevant I think.