Stupid Google Tricks

http://lifehacker.com/339474/top-10-obscure-google-search-tricks

http://www.google.com/help/features.html

http://www.google.com/educators/index.html

http://www.googleguide.com/advanced_operators_reference.html

http://www.gearthblog.com/blog/archives/2008/01/video_tutorials_for_google_earth.html