Alright, ive been playing Zombie Panic for a while now but here is what i feel is best for you "N00bs" to do when you have only played for a while
1: be in a bright room, easier to aim!
2: when shooting the zombies, get a bit closer so your shots count, because you easily run out of ammo and you may want to live for 1 round!
3: After running out of ammo, drop the empty gun and switch out your other gun! The more guns you have the slower you go, my suggestion is when you out of all ammo just run for you life untill your find some ammo! only some servers have fast respawn weapons.
4: if you have no other weapon exept for the 1 clip you have for your pistol, savor it and wait for some to die, for they may drop ammo... you may not agree with me there but its the only way to stay alive in that sort of situation!
5: bright corners will help you the most when you have just started playing, the fact is that there will be only (if the room is not a triangle) two ways for them to go.
6: DUCK AND SHOOT EM
You may not agree with anything i just said but this is just my oppinion. Ive gotten some people i know into the game more by telling them these things because they stayed alive longer and longer each time...