So I've been using OpenGL for a while and I feel I've got a reasonable grasp of the basics: Primitives, transforms, textures. I can make a sprite in a modelling program and get it up on the screen. But this is all using the fixed pipeline and basic glBegin, glEnd calls; I'd like to move on to the modern features. Can anyone recommend a good tutorial for understanding vertex shaders and such? For that matter, just a list of what the advanced features are would be helpful, so I know what the holes in my knowledge are.