Too much information is NOT good as it overloads memory thus lasting comprehension.
Almost need a short course for persons new to the type of operation.
(And even around the machine - advice to keep head low approaching helicopter, especially ones like S-76 whose rotor is angled down at front, repeat before exiting. I presume operations like Helijets passenger service shut down on arrival, but EMS/rescue helicopters and utility helicopters may not.
The one that was almost hit by a train west of Prince George BC did not shut down, but its pax were experienced.)