Are you interested in trying armored fighting? Newcomers are welcome!
Bring water, workout gear, closed-toe shoes, and an appropriate athletic cup for your gender. The Barony of Roaring Wastes maintains a collection of loaner armor, so there is a good chance you will be able to get into armor at your first practice if you so desire. Of course, you are also welcome to come to learn basic sword moves without getting into armor, or just to watch. Some people show up to practice late, so it usually pays to wait 30 minutes or so if you are the only one there. The Middle Kingdom Wiki has more suggestions on what to bring for your first time in armor.