I wrote a 5 page article with 18 tips for messiah studio for 3d World issue 142. The tips range from beginner to advanced level, and include video tutorials as well as start and end project files. Make sure you pick up a copy! http://www.3dworldmag.com/2011/04/04/get-the-most-out-of-messiahstudio/

This is a free tutorial for messiah showing you the basics of how to apply bvh motion capture to your characters quickly in messiah (about 7 minutes).