** You will need to understand Part 1 of this tutorial before you can decompress the files used in any other parts**
Editing moves works pretty much like in the GBA games. You can attempt to make new moves by mixing and matching the different move effects available and manipulating accuracy, damage etc. I remember seeing a post on a forum somewhere where someone posted every Gen IV - VI move that was possible to remake using gen III effects so you can try searching for that if you want ide