Where to start? - Coding

Alright ive been inside the modding scene for 5 years now and i program in like c++ and java, and i have done it a while.

My simple question where whould i start with apb?
I dont want to run around with aimbots and stuff like that i just want to learn how to make them for example sharing them to mpgh or just basicly learning how to prevent a lot of hacks for my future programs and games. Also im not asking you to show me anything. im asking where to start.

In what type of editor? Decryption is needed? What language is it coded in? What to look out for and stuff.

My languages atm:

This post was not made to seek hacks, this post where to understand what the game is using and how to start.
No. i dont want any hacks sent to me.

Thanks in advance!