my best tip is, to google for tutorials on C++ programming and also google Game Dissasembling, you'll need to learn a coding language to make your own hacks, and i would highly reccomend c++ because it is extremely stable and fairely easy to learn, i reccomend learning as soon as you can, its just like learning enligh or another language, you learn it easier the younger you are

as for dissassembling, you'll need to beable to disassemble games to edit exe's, and other stuff, also you should learn asm if you can, but i dont think its fully neccessariy, i'll try to find you some links later, but go ahead and search, i might forget to