Spotted this list with Google Adsense Tips and Tools arranged by category.
http://www.quickonlinetips.com/archives/2006/07/google-adsense-tips-and-tools-collection/
Lots of new ways to track and learn about adsense. See if you like it.

THis might be good too :)

http://www.seopedia.org/contextual-advertising/google-adsense-adwords/5-google-adsense-secrets-tips-and-tricks/