[Help] FPS Aim-bot Confusion

Hello everyone.
I am quite new to hacking, and i am learning c++ ( i suck at it :P)

I'm curious whats the basic idea in an aim-bot, maybe you could include main code examples, and show how it works a lil' and the main components. Do you need to know the games offsets to do a memory aim-bot? Or a color one?

And I'm talking about both memory, and color aim-bots.
If you can, i would prefer if your given examples were in c++.

Thanks everyone!
:D