Google Adwords

 
There are many Adwords books published to teach adwords. I would recommend you to research the books and reviews before you spend your money. There are many Adwords books out there that don`t teach you anything you don`t already know.

1) Perry Marshall: I can definitely say that Perry Marshall is one of the best Adwords Experts in the industry. I personally read his book: "Ultimate Guide to Google Adwords" and definitely worth the money you pay.
This is a great book for people beginners who are willing to learn Adwords and online marketing. Also there are some sample test results included to help beginners understand the Adwords system better. Perry Marshall is not only teaching you how to start with Google Adwords, also giving recommendations about overall online marketing that can be implemented to any area.