http://nehe.gamedev.net/

I checked out some lessons from there. Downloading the second lesson for Linux was easy. I went to the section on OpenGL tutorials and clicked on an image of the demo. Then selected all the examples that mentioned Linux as a platform. Transferred the files to my key drive from the download computer and went over to my pc with Fedora Core 4 Linux. I had to manually tell it to connect and then copy the files over to my home directory and then built and ran them. Not all worked properly however, perhaps my configuration needs to be worked on.

There are many language choices. I noticed some one posted some examples in Ruby recently. Also, there is some C# code.