The AdSense blog has announced the availability of Resources tab in your account to keep track of all the official AdSense-related documentation.
Google, AdSense, New Features, Featured News
We've compiled links to a number of resources under this tab, including the Help Center, Program Policies, and Help Forum. If you're looking to improve the performance of your ads, you can now easily navigate to our Optimization Tips page or to publisher tools like Analytics.
Need help with implementing your ad code or viewing your ads? Try our Demos & Guides or Troubleshooting Wizards, all available under the Resources tab.
In addtion to official documentation, you can find a URL of the Inside AdSense blog incase, if happen to forget. 🙂