well.. it's pretty easy to understand. I learned it fairly fast from drako's
but i'll just give u the fast track to add the script into ur Cheat engine by words since maybe it'll help u more than u reading constant amount of stuff.
You just open CE and click on the [ memory view> Tools> Auto Assemble> copy and paste one of the scripts into the Auto assemble window> File> Assign to current cheat table ]
" by the way if u didnt know, just making sure, the show buttons in the drako's thread under the names of the vacs are the scripts so just click on them"
And how to update ur offsets check out this tut, I found it useful for starting