So i joined today. With no knowledge at all. And i'm doing fairly well with controlls and so on
I managed to create a map but when in-game I was stuck. Zombies didn't spawn so the rounds just keept on rolling in.
And 1 room was red. Any ideas?

Did you correctly KVP the zombie spawners? If even at all? And in the case of the red room, make sure you put a reflection probe in the room that is red. Hope this helped a bit! 

Also, did you mean that you were literally stuck? As in you can't walk around? If that's the case, make sure your player spawn isn't inside the ground. Make sure it's not even touching the ground...but a considerable amount of space above it.

Hah thanks for the reply's helped me out a lot. Now i know how to do everything. The zombies was because it wasn't set up correctly. But i'm having a problem. I created a new map and everything worked just fine. But then suddenly when i wanted to play my maps after some more tweaks and fixes i spawned without any guns and when i bought a weapon of the wall i couldn't equip it. I can only throw grenades and sometimes it freeze for 1-2 seconds. Quite annoying... 

Hah thanks for the reply's helped me out a lot. Now i know how to do everything. The zombies was because it wasn't set up correctly. But i'm having a problem. I created a new map and everything worked just fine. But then suddenly when i wanted to play my maps after some more tweaks and fixes i spawned without any guns and when i bought a weapon of the wall i couldn't equip it. I can only throw grenades and sometimes it freeze for 1-2 seconds. Quite annoying... 

Hmm...sounds like a problem with your _loadout.gsc file. Go to 'Mod Builder' amd make sure under the IWD list that you have _loadout.gsc selected. Then make sure you tick 'Build IWD File'. Hopefully that's your problem because it's an easy fix. Let me know if you have and other problems

Hmm...sounds like a problem with your _loadout.gsc file

this is likely, its not in there by default, and i think i remember someone telling me there was a problem with the one included with the mod tools