OK so how much training do you get before you are allowed to conduct rotors running ground runs by yourself?
RFM training on start procedures/run procedures/emergency procedures with qualified pilot. Then 5 ground runs to the pilot's satisfaction after which he signs your run-up card. Then 1 recurrent start with a pilot annually.
Any hands on training in case the aircraft does get airborne
No. Aircraft tie-downs to be used when available. Controls to be locked or frictioned unless ground test written procedure requires control movement. No hydraulic checks permitted with rotors turning. Plus additional limitations for wheeled aircraft.