For those who know me well, they know that I spend a lot of my free time gaming. Ask my girlfriend, she can testify :). I love playing first person shooter games. BFBC2 is tactics and squad based. If you have a few friends who play this game, form a squad and use your mics. This will definitely benefit you and your squad and your team. If you have to sacrifice yourself for the good of the game, do it! If you have the opportunity to pick up a medic's kit and heal or revive someone, do it! The key word for this game is team work. This is not your MW2 run and kill everyone by yourself game.
Here's a video I found on youtube that shows you the proper way to enjoy and play this game. Some very good tactics on what you should and shouldn't do. Enjoy and if you haven't gotten the game. GET IT!!