Personally besides the obvious "don't die" lol I think it would have been helpful if someone would have told me to upgrade my medkit first and formost. Gives you the most points for the least amount of work and as an added bonus helps the crap out of your squad.
Dying is not important except in Suppression games. Only there is a +1.00 kdr a neccesity to win. You can pck up repair kit and get mega frago points and lots of c.
Maybe don't die is good advice but not killing is not a game breaker.
7x vet, 800+h kdr .85
That's until you learn how to aim without aim assist, of course.