More Links

Stanford Redwood Club
Stanford Outing Club
Stanford Outdoor Education Program
Intrepid Northern California Hikers (INCH)
Berkeley Hiking Club

Bay Area (and not only) trip reports:

Bay Area Hiker
Arturo Crespo's Site
Bob Burd's Site
John Fedak's Site

Many other trip reports:

summitpost.org
climber.org
localhikes.com

General resources:

http://www.backpacking-guide.com/
GORP

Places to buy specialized gear:
Sierra Trading Post
REI
Sports Basement
Any Mountain