Hmmm, I was playing multiplayer for several months, but have since slowed down. In fact, I haven't touched it since Academy came out. But I also haven't really been playing Academy either.
What do you mean by 'how do you play multiplayer'? Are you having a problem connecting to a server? Or just want to know some good combat moves?
Check out the Jedi Clan in my signature. Although we are now a Jedi Academy server...no Jedi Outcast servers anymore.