For 3d graphics, You'll want to use pi3d: search the forums for a long thread about it, and go to
http://www.pi3d.org/
For general pygame stuff, there's loads of tutorials on the web, youtube, and lots of printed books. Just work your way through the tutorials, starting at the beginning - there's a heck of a lot to learn, so pace yourself
http://eli.thegreenplace.net/category/p ... -tutorial/
http://inventwithpython.com/pygame/chapters/
etc.