This is where there are/will be links to tutorials I have written about various things. For the most part, I claim no particular expertise - they are just things that I have had to figure out and have since explained to more than a couple of people. Feel free to send me corrections or other things that need saying.
Things that are possibly coming in the future:
1. I'm writing a 2D collision detection system for use with ODE (that'd be the Open Dynamics Engine). It's at the point in development where things look as though they're going fine, but that's exactly how they would look if they were about to break horribly and irretrievably. So if I get that working all nice, I'll be putting up my collision system and writing a tutorial on how to get it to work with ODE.
2. Another thing I have worked on recently is a semi-random terrain generator that takes a mostly empty heightmap and uses the existing values to fill in the remaining empty ones. Good for when you want a rough shape (for instance, you need an island so the values around the edges of the map need to be below sea level) but you don't want to bother modelling it in any more detail. So I'll be hopefully writing a description of how to do that.