A free option would be to go through Google's own powerpoint learning centre - Type 'google adwords learning centre' into Google. Joe, PinkSheep - Account Manager
Stop reading, start experimenting, you will learn a lot more, a lot faster. Do you think the guy would of had the time to write that book if he was actually any good at making money using PPC ?
Books are great, but I must admit experience carries a lot further. If you are starting, it is wise to go ahead and read as much as you can, and also keep up with some of it while testing and getting down and dirty with the work. My latest book Project: PPC has some great tactics and tips to help you out. If you have any questions, feel free to pm or post. Good luck.
I recommend PPC Coach. Its not a book but since PPC is constanctly changing, a book does you no good.