Bring your own reusable water bottle, please. While we do have paper cups and plenty of water here for you, we do recommend that you bring your own water bottle. Because... cold and flu season and save on paper cups!
For your first few lessons, don't worry about having special dance shoes. Just avoid shoes with too much traction or black rubber that would leave marks on the floor. After you really get into dancing, your teacher can recommend what to look for in a dance shoe and where to find them.
Yes. For the beginner level classes, total beginners are always welcome. Join any week. Having said that, most folks find they benefit from a few lessons prior to jumping in.