The best book is the OpenGL Programming Manual by Mason and Woo. This is also called the "Red Book".
If you search the web, there are many sites on OpenGL.
A good starting point is http://www.opengl.org.
Also, Mark Kilgard (who used to work for SGI) has a wonderful site with lots of links (http://reality.sgi.com/mjk)
Also, Normal Lin has written another great book on 3D-graphics under linux