Cheat Engine... Have fun with a ban...
This tutorial is quite simple, what you are doing is looking up the memory addresses that are dynamically allocated at the start of each game boot. You then trace these using addresses and offsets until you find the static address. Once you have the static address you could write a script or simply save it and edit it in CE to allow noclip. Thanks for the tutorial but it could of been said a bit clearer.
Cheat Engine... Have fun with a ban...