If you have one of the early Phantom models like the Phantom 1 or 2, I suggest flying a bunch of times before putting the gimbal on. I know it’s tempting to fly it and record your first flights, but plan on a few light crashes here and there. You definitely will not want to crash on your first few flights with that expensive gimbal attached. While the DJI lineup is extremely stable, I recommend practicing with smaller toy drones indoors without GPS (manual modes)