I just got the game today. any tips for new players? recommended servers?
I'd recommend sticking to 32 player servers for now. 62man servers get crazy as it's grenades, vehicles and snipers EVERYWHERE.
-edit-
Here's some beginner's tips for you as well.
-pressing F2 in a vehicle lets you switch to the second seat. This ranges from F1 (driver/gunner) all the way to F5
-when playing assault, you don't need to look at your teammate to revive them
-laser sights are visible through smoke
-when in the RHIB, pressing F5 puts on the jetski for quick getaways
-to pick up a soldier's kit, hold E when looking at his weapon (this is useful to revive teammates if they are playing assault and you aren't)
-you cannot load ammo into guns you pick up on maps (.50 cal sniper etc)
-use 'Q' to spot enemies
-'Q' is also used to request ammo, health, orders etc
-when playing as a squad leader, hold 'Q' to give orders to your squadmates as well as request items from the commander
-enemies can be spotted through smoke grenades
-you can hold 'E' and run towards a vehicle to enter instead of spamming 'E'
-C4, SLAMS, and Claymores can be detonated by shooting them
-pilots can be shot out of all air vehicles
-at full health, tanks need 3 C4 charges to be destroyed
-you can counter a knife kill by pressing 'F'
-knife kills cannot be countered from the side or back