Also add a link to Wc3campaign's tutorial sections... they have good tutorials. But they are forum format. Pretty good feature though because it allows for easy ideas to be presented and added to the tutorials.
Guess I'll just post what I think should be the models rules. I'm pretty sure RightField will agree with them
1. No posting of stolen models (Any of Cookie/Xaren/RCX's stuff, anything someone else has made, any model-skins with someone else's skin without credits/permission)
2. No models that don't work ingame: Whats the use of it if it only crashes the game?
3. More buildings, Mecheon likes building models, he has enough units to make several large armies already <_<