Nehe's site is great.
http://nehe.gamedev.net
Books (older versions available online for downloading):
The Red Book - OpenGL Programming Guide
The Blue Book - OpenGL Reference Manual
The OpenGL Super Bible
Here's a site with the Red and Blue books (among others):
http://ask.ii.uib.no/ebt-bin/nph-dwe...=fullhtml;hf=0
