Computer games

Just brought TF2 and Gmod from steam and it's not like a massive noob to TF or Gmod as I've played both before, I was just wondering if any of you could give me some info as to how to get the things like hats and stuff for the characters. Many thanks :)

I too have it, but am pretty crap at it also. Prety sure you get stuff from doing the achievements and i think the hats are random (and u can make them with the random crap that you get)