How Google works

Found an interesting link on how the great google works. Useful info for many.
Didn't find such a neatly organised step by step information on how google works.
It would have been titled as how Google search Engine works. That would have been a perfect title. Thanks to Times Of India article.
The below link is also a good source and it's still not directly from Google.
http://www.googleguide.com/google_works.html
Below is the info from Google direct.
http://www.googleguide.com/google_works.html
For Google's all features:
http://www.google.com/help/features.html