1. Open the game
2. Open Cheat Engine
3. Search for a value
4. Play a match so that the value changes
5. "Next scan" for the changed value
6. Repeat untill there are few adresses left at the bottom
7. Change value of adresses, as soon as the value changes ingame you know you've got the right adress.
That's the basic tutorial. But the values for stuff (e.g. camo's) are not just 1 or 2. That confuses me. But all I know is the basics, so here they are.