https://www.smwcentral.net/?p=section&a=details&id=41254
If you've ever watched someone play kaizo mario and thought it looked cool but also like you could never do it, I highly recommend trying out this particular hack. It is by far the friendliest kaizo hack I've ever seen, and I think anyone who is just generically "pretty good at video games" can get pretty far in it and feel good about it.
That said it's not an instructional hack that'll tell you how to do every trick, so you might need to check out a video of someone playing it if you get stuck to see what you're supposed to do.