Help with triggers I would beed for a NOLD map

I plan on making a Night of the Living Dead map, the problem is I'm no trigger expert and NOLD won't open up in WE, so I'd really appreciate it if someone could list the primary triggers that would be important for me to know in the creation of a NOLD map (Describing how to set up the triggers would be GREAT, but if someone could just list them I'd appreciate it.)

Well you make custom zombies and undead units.
And then you have a trigger that creates them at a region every (whatever) seconds. Tell the created units to attack to the location of a player. I think that's it, unless you want it more complicated

Thanks, and yea, I want it similar to the offical NOLD, hopefully someone else around here played it too...like the trigger that the gold is like ammo and everytime you shoot it decreases, and the lumber are clips, so once your ammo runs out you lose a clip and it refills again. (And the trigger when you're out of ammo and clips (gold and lumber) you can't attack unless you get more clips)

I'm sure there are more but I think that's all the main points...but any more help would be great.

It would be a very long list if we listed the triggers needed to make just a basic map. But im sure a NOLD won't require many variables.