If you are going to do Body Pump or Grit you will want a barbell weight set, one like this one on Amazon which is way cheaper than the Les Mills set. You'll probably also want a mat. Body Pump uses a bench to lay on but I don't have one, I just put my mat on the floor. Some other classes use a resistance band and of course cycling requires a bike, but it all depends on you. You can start with classes like Body Attack, Combat, Sh'Bam and Body Flow that require no equipment (maybe just a mat) and grow from there. Good luck!