If you've played games like CS you already have a basic gist if not:
1. Walk - I can't stress this enough but I see a lot of new players stressing themselves out and not being able to hit an enemy because they're running & gunning 2. Crosshair placement - always try to place your crosshair head level or body level when moving so you just click and pop goes the enemy 3. Be mindful of angles and always check angles you're teammates aren't checking - Never check the same angles as that just means an enemy can pop out and kill 1 or even all of you
