At first, not much. You’ll typically just need to bring athletic clothing and sneakers to your first set of classes. Folks with a penis and/or testes also need to bring their own rigid groin protection like an athletic cup. Boston Academie d’Armes provides the rest of the basic safety gear and weapons you’ll need to start as loaner gear.
Over time, you’ll want to get your own gear, and our staff and student body are more than happy to provide links and advice on what to get and from where.