lol counterstrike,
Just use auto assign so you goto the side with less players. Learn the controls, save cash by not buying weapons and just pick up the deads. Load up on nades and body armor. Dont flash your own team. Play on servers with no awp and with FF off.
Bonus Tips
Call everyone that kills you a cheater (cause they are)
learn to speak 733t
And remember headshots, headshots, headshots.