Be sure to wear a body harness and lanyard. The ones that can be driven when extended can pitch you out of the basket over rough terrain. Also, the basket can tilt far enough that you will fall out if you pull the wrong lever.

They are not hard to use, Left , Right , Up , Down , Don't stick your fingers in it.

When making any move, be aware there is usually a delay and some springy / overshoot action so make small moves and stop early. The controls are generally proportional for speed.