You might want to pick up "The Red Book." It's a very good tool for OpenGL.

And as mentioned before, don't think you are inferior because of your lack of a degree. I had a professor (PhD) who couldn't program to save his life. How he even got a doctorate is beyond me. Degrees just help because they filter out unskilled programmers. USUALLY someone with a degree is a decent programmer, but not always. That helps in an interview, but if you can demonstrate a high level of skill, most employers (I hope) will overlook the lack of a degree. However, if they have two candidates who seem equally skilled, they will probably pick the one with the degree.