I've made up a quick and dirty step by step tutorial for the SH5 Mission Editor. It's all pretty basic. Place a ship, turn it into a convoy, place the player, do some triggers and events and stuff.
There's a few problems that aren't working quite how I wanted them, Objectives and the Radio Contact Report, but this will hopefully be a good starting point for new users.
Please let me know if you have any suggestions!
You can download the PDF from here:
https://docs.google.com/uc?export=do...g5N2FhNTYxMDlh
Updated 4/9/2010:
Added information about Player Side changing *.misge vs *.mis saving.
Added information about viewing harbor overlays thanks to peri_reis' information.
Added information about Objectives
Also see this thread for lots of other good information about the Mission Editor and how to do things:
http://www.subsim.com/radioroom/showthread.php?t=163364