If you log into your Goole Adsense account you will see a new tab called Resources. This is basically a very comprehensive Help section. There are also links to a lot of useful tools like Google Analytics, Google Webmaster Tools, Adwords and other Google services.

With everything that you need in one place, this is a great addition to Adsense. The user friendly layout is refreshing. They definitely kept the customer in mind when they created this section of their site.