CS: GO Mapping Help

Hello, I’m looking for someone who’s willing to help me out a bit with a CS: GO map I’m making.
I’m new to mapping and I’m not finding too many GO-specific mapping tutorials, so that’s why I’m posting in here. The map I’m working on is based off of the bank from Postal 2 (if that makes anyone want to help me more).
Steam: http://steamcommunity.com/id/othersider/

Source mapping principles apply to all Source games, including CS:GO.

These are some helpful sites to get you started with mapping:
The Valve Developer Wiki
Halfwit-2, for some general & more specific tutorials
Interlopers, again for some more specific tutorials

If all else fails, there’s a question Megathread right here.