Making my own LUA hack for Gmod

I was curious because theres some hacks I've used and they always don't go in my comfort zone. So I was thinking of making my own for that matter. I need a bit of advice and know where to start and I'll just go on from there.

Use your ctrl + c and ctrl + v keys, thats all i can help with dude since mine are broken

the problem is i'd rather not be a skiddie and copy other people's work. if i wanted to modify something and not know how to do it or not understand how shit works then whats the point?