The best FPS game in the shelves (currently)
in a month you'll start getting positive scores (or near), and in a year you'll be 1337 and pwn everybody
This game is best played on advanced computers, unlike an old windows 95 where it lags alot.
I recommend u download XFIRE, which is the game version of AIM, where u can chat with your buddies, join buddies in games, and also save ur favorite server list, and join them automatically.
ingame, for starters, i suggest either the m4a1 (rifles) or the mp5 (SMGs)