How to use SetTable() ?

Could someone please instruct me on the proper use of it? I haven’t given up, just got really frustrated. Please forgive me.

Stop making threads just stay in one so that all your problems and questions can be answered in the same place.

Here’s a link to the What Do You Need Help With Thread it’s a place for all the small questions
http://www.facepunch.com/threads/1068418-What-do-you-need-help-with-V2