Well it's not like every PC game has the same controls, unless you don't know how to type we all have to learn the controls for games. You'll get used to it. If you have a mouse with a middle button and maybe side buttons, that can really come in handy.
I would recommend joining some less populated servers and slowly easing and adjusting to your keys. Laptops have small keys, at least many that I've used compared to my fingers have, so it takes time to get used to them but you will. Just keep at it.
"If I was a dev, I would be proud to point out in a game I made that the best weapon to kill a hoard of children was the flamethrower." - Gigabomber