It pays off, I remember last year I was bad, but never as bad as you, on my first name *C-STARZ*PUSHA, I still had 100 more kills than deaths, and that was my first socom game, I suggest you make your name an ensign, and play there, that's the best place for new people to play.
U ARE WAY TOOO LATE I SUGEST U STOP AND WAIT FOR SOCOM 3.
BUT I AGGREE THAT U SHOULD GO TO A RESPAWN ROOM AND JUST PLAY FOR HOURS THEN UL GET THE HANG OF THE GUS AND STUFF.
OHH YEA M16 ONLY GOES TO BURST ITS THAT KIND OF GUN BUT IF U GET REALY GOOD WITH IT UR A MURDERER
Yeah just do what them guys told ya, and in a few weeks u wont need 2 use any noob guns and u'll get used 2 most of the levels the easiest is crossroadz i think! :D