Hello---
I must to make a car race game with c++. I must to draw pist and I must to control whether the cars hit the pist. I heard that I can make these by opengl. How can I learn OPENGL and what is Opengl of course? Can you help me?

Game programming is never an easy task.
It is a completely different field.

Instead of learning Opengl, you can learn DirectX.
Most of the high graphics windows games are made using DirectX.
But the disadvantage is that you should have Visual C++(You can download the Visual C++ Express for free..)

The best way to start is to buy a book(or use Google Print) about what are you going to study.
I think Tricks of the Windows Game programming gurus is the best book to start.

Regards,
Paramesh.

__________________

Don't walk in front of me, I may not follow.
Don't walk behind me, I may not lead.
Just walk beside me and be my friend.

If you're really interested in learning OpenGL you may start reading the OpenGL Redbook, but it will take you a long time till you are able to draw a car or something like that with OpenGL or DirectX
http://www.rush3d.com/reference/opengl-redbook-1.1/