Michael,
I haven’t used it for Timelines yet. I mainly break up my database for a case into pleadings, discovery, etc., with some smart searchs to break things down even further. I might have a few text notes in there, with links to documents using the ability to link to specific pages in a document. Beyond that, I really just like the ability to quickly search and find things.
As far as tutorials, I watched the tutorial on Screencastsonline, although that wasn’t law-specific. I also spend some times in the official forums, too.