Do I need a driver's license, insurance or registration to operate an ebike?

Generally speaking no, you do not. Electric bicycles with an electric motor of up to 750W which can propel a rider no faster than 20 mph that has fully functioning pedals, is classed as a bicycle and not a motor vehicle by the department of transport. Electric bike laws can differ between states so it is important that you are up to date ebike regulations in your area.