I have learned programming with Game Maker. It's a great tool to start with. I moved on and I now program in C++ and C#. As some things I made are still usable today I decided to keep them online. Please keep in mind that these things are quite old and might not work anymore.
3D examples
I have made some examples with water and post-screen shaders in Game Maker. Note that these examples are not accurate.
Extensions
Tutorials
I once made a tutorial about using L3DT and Ultimate 3d. It's quite outdated now but still contains some useful information.
