Great advice all round most pro users of chain saws learn from brothers uncles, fathers how to use a chain saw in this country and real safety usually follows an accident.
In a former life as a Tech Officer Photographer I accompanied a PHD from CSIRO Forestry where I worked to Tasmania where we went from timber mill to the next mill following chainsaw operators out in the forests. I had still cameras recording their techniques (real hazardous at times) and my mate used a movie camera and interviewed the cutter blokes while we had a world champion axeman and chainsaw racing champion of the world watching us trying to keep us all safe. What they were doing was cutting stags ie huge (up to fifteen plus feet across) mostly hollowed out old trees left by previous cutters for lots of reasons. They called them widowmakers because limbs etc crash down regularly when being cut or in the falling process catching other tree branches that clean you up just as easily cause they can have a delayed action. This often in the rain I found very hazardous. The PHD guy was also a psychyatrist? made for a vital study hence my conclusion from his subsequent book likened to chainsaw for dummies that the learning process for feller of trees was skimpy at best. I was glad to be finished with that project many near misses during this exercise.
An observation with pro users of chainsaws is the electric ones produce a constant torque that is harder to control than shutting off the throttle in an emergency as can be done with petrol ones. The meanest angry saws were the ones I saw in use for racing purposes had a motor on either end of two handed saws they were mean mothers.
The saddest thing I have to report is we had three vehicles with us unlimited world class timber all round us and I wasnt bitten by the turning bug so I could have brought back a ton of this islands unique timber since we travelled over to Tasmania in a huge car ferry, sob sob.
Kind regards Peter.