hehe MED is the easiest Editor there i know.

But ok, here are any tutorials:

Code:
http://www.3dgs-hobbyschmiede.de/tutorials/med.html

And go to this page.:
Download the file: 
http://download.conitec.net/wed_tutorial_e.zip

There u can find a big tutorial about WED and MED.
(Both in the folder)