AdSense Secrets is the best selling AdSense e-book. There are twenty-two big chapters and Two Hundred Ninety Three Pages with tips, examples, and pictures.

Joel Comm explained everything with real-time examples from his own sites and included screen shots. This book is very easy to read and understand.

In AdSense Secrets, you can discover

How to Claim Your Share of The Multi-Billion Dollar AdSense Pie
Designing a website/blog from the scratch for setting up AdSense without a domain and hosting
Secrets to Tweaking and Optimizing your Ads for Maximum Revenue
What to do before applying for AdSense
Principles of ad placement and the best performing ad units
How to generate quality traffic to your site to generate maximum income.
Influencing your ads
building content

This will really help you to double or triple your AdSense income. This massive e-book has been completely revised and updated with the latest strategies. If you think placement is all that matters, think again :).