Help With IDA And Offsets

Can someone help me or point me in the right direction for finding offhost offsets like no-spread/no-recoil chams and more?
or if you know how can you tell me how to find the offsets or leave a very detailed description on finding them, really just any offset that is non-host

wouldnt there need to be an offset for it to read from or write to?

I've never coded a cheat for a COD game except for some host-only cheat for MW2 so I'm not sure but I think you have to get the punch and subtract it with your viewangles. Then you need the localplayer's offset, offset from aimpunch to localplayer and offset from viewangles and localplayer or where it's located.
The offset you write to would probably be your viewangles.