I wanna start hacking this game, but having never hacked any sort of game before, I wanna know where to start and how to do pretty much anything. I do have a few tools handy like ndsts and CrystalTile2, but just the most basic idea on how to use them. Please lend a hand if you can

You could try this forum: https://www.ygopro.co/Forum/tabid/95/g/posts/t/13776/Yu-Gi-Oh--5D-s-World-Championship-2011--Over-the-Nexus-hacking#post72364

I don't know anything about Yu-gi-Oh myself though.
_________________________