Explaining how to make fun things because, if nothing else, it helps me understand them.
Collections of SVG tutorials covering the basics to more advanced techniques for making SVGs interactive.
Building simple 3D engines with Pygame or processing.js.
Building a simple but versatile physics simulation with Python and Pygame.
Solving geometry problems for computer graphics.
How to achieve some simple effects in Inkscape.
Various tutorials explaining some simple bioinformatics concepts.
Not really a tutorial, but short explanations of various Python things I've learnt.