[Getting The Most Out Of Adsense]: Top 10 Adsense Tools
“..Some of the best tools around for getting the most out of Goggle’s Adsense campaign. First, we’ll start off with the tools in order of personal preference from less useful to most useful (since there is really no good way to compare a tool– its all in how you use it anyway)..”
Use the Keyword Tool to get new keyword ideas
Ad words and Adsense tools directory
Nice collection of many different Adsense related tools collection, regularly updating with new stuff.
Finally don’t forget about their own homepage with a huge amount of tips how to get started, how to set up ads, success stories, optimization tips, forum and blog