OpenGL 
http://nehe.gamedev.net
http://opengl.org
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/opengl/openglstart_9uw5.asp
http://prografix.games-creators.org/doc_cat/94
DirectX 
http://msdn.microsoft.com/directx/
http://www.microsoft.com/downloads/details.aspx?FamilyID=77960733-06E9-47BA-914A-844575031B81&displaylang=en
http://prografix.games-creators.org/doc_cat/93
General 
http://www.gamasutra.com
http://www.flipcode.com
http://www.gamedev.net
http://www.codeguru.com
Perso 
http://navilinux.free.fr/dx_visual8.htm
GFXConst SDK 
http://developer.nvidia.com/object/sdk_home.html
http://www.ati.com/developer/radeonSDK.html
Recherche 
http://google.fr