Where to start to get familiar with compute shaders?

Hi Everyone! I am at a point where I know what a compute shader is, but still can't get my head completely around it. I feel like I would need to get my hand dirty, but if I look at stuff like the Mini Engine my brain hurt a bit... do you have a path of useful things to implement in cs that will gradually give me a better understanding and a more solid grasp of CS? Thank you!! Jacques