There's not really one place you can go for a tutorial, unfortunately.Thanks. Do you know if there is a good tutorial on how I can learn to make my own cheats for some games?
I would start out by looking for simple 32-bit values at static addresses. If you're just editing something like health or some other attribute, it's safe to assume the address is always at that location in RAM in a lot of cases, so you don't need a pointer.
For example, try searching (32-bit, specific & equal, converted to hexadecimal) for your amount of Skill Points in RAM for the game above, maybe searching between addresses 0x16000000 and 0x17000000 or something. If you find it, you can modify it into a code (address is XXXXXXXX, desired value is YYYYYYYY). If you want more info, try viewing some of BullyWiiPlaza's tutorial videos.