OP: Starting off, just run your legs off trying to find a weapon. I don't really care if I have a 10+ zombie train, I just keep running into barns and other houses with multiple entry points until I find a weapon. Spawned outside of Balota airport and managed to get kitted with an M4, 7 mags and a revolver within the first 20 minutes of playing. Just don't be afraid of dying when you spawn, since you do not really have anything to lose at that point.