Many instructors offer a special rate for new students on their first purchase. Any loose, comfortable clothes are fine. Most people wear a leotard and tights, or shorts and a T-shirt. Bring along a towel or exercise mat for the floor work. Good, rubber-soled aerobic shoes are recommended.
Registration is ongoing on a drop-in basis.
Everybody starts out that way, but most people find that the steps are fairly simple and can be picked up after just a few classes. It takes time to build up some endurance, but Jazzercise is geared towards all fitness levels. The instructor will demonstrate both high and low intensity, and high and low impact. If you look around the room, you'll see people working at all different levels. The trick is to stick with it and not get discouraged.