W : to move forward
A : to go left
D : to go right
S : to go back
obviously you have to move the mouse

Mouse1 : to shoot
Mouse2 : to aim
R : to reload
to change weapon move the mouse wheel or even click the numeric keys

to enter a vehicle just click F
press E to start the engine
To drive the same controls as to move on foot WASD
change position inside the vehicle with F1, F2 ... etc.
certain positions can have different points of view, for example like the driver, initially the view is focused inside the vehicle but by moving the wheel you can look outside.

WHEN THE VEHICLE EXPLODES YOU ARE ALL DEAD

to choose a server I recommend to take one of your own language and you MUST have a microphone to communicate otherwise you are useful as s***
also check ping for a more enjoyable gaming experience !

Once you have joined a server, choose a team, when you join I advise you to introduce yourself and ask the team leader for the plan and what equipment to take
ALWAYS follow and listen to the team leader

Once you have finished your game session to exit the game press ALT + F4