Well, easy ways to level up is to play Rush, as you get 250 for arming/dis-arming a M-COM station and also 500 for detonating the M-COM station, also play Conquest! You get so much EXP from capturing flags and etc. My advice is to play games with an objective, not Team Deathmatch as you only get 100 points a kill on a small map with no vehicles.
Other ways is to level up every kit possible!
You get a huge amount of EXP from heals/revives in the Assault Kit and in Engineer you can disable/destroy vehicles, repairing vehicles, have a whole explosion armory at your fingertips (Mines, RPGS, JAVELINS, SMAWS... etc.) Also support can give you points for re-supplying team-mates and have basically unlimited ammo. In support you also get C4 and CLAYMORES which can re-stock from the Ammo Kit.
I don't recommend using Recon until you get a Sniper you like, you can still get a fair-decent amount of points from MOTION SENSOR spots and etc, but it's only a good kit for long-distance maps and gametypes.
Guns: Stick with one gun at a time in a class until you get a Service Star!
To get a Service Star (2000EXP) you have to unlock all attachments for that specific gun, so I stay on one gun till I get a Service Star just for the 2000EXP.
CBF Reading, you asked for it, so don't complain *-*
Posted on Friday, 20th January 2012