Understanding the Google Webmaster Guidelines
This website is for those who want to follow the Google webmaster guidelines, but seek more definitions, explanations and examples than Google provides in their documentation.
This website describes each guideline in terms that just about anyone can understand. Learn more »
Examines your web page and shows you how a search engine sees it. 
Search Official Google sources for answers to questions. 
Google related resources and tools useful to webmasters.