Ok, "tutorial" might be a stretch. If you want to see how a decent multiplayer game unfolds though, I have posted what I think is a fair example.
Download it at
sins.bz . You have to put it in a Hidden folder, which you can only see by opening Tools (at the top) --> Folder Options --> View --> click on "Show Hidden." The path follows:
C:\Documents and Settings\**your user name here**\Local Settings\Application Data\Ironclad Games\Sins of a Solar Empire\Record-MultiPlayer
The patch should be out Wednesday or Thursday, so you have at most two days to give it a shot.
I gave my quick impressions on the sins.bz page, so for better or worse you can follow my thoughts. Make sure you are watching as Cykur or Foundation so you can watch our commands.
The battle around 33 minutes really shines to me.
Foundation