One of the best points of advice given was to lock the chain brake everytime when you finish cutting. I really never used it before. The instructor said some folks believe in the 3 step rule prior to locking the blade but he goes with the 0 step and locks if as soon as the cut is finished. For those worried about it wearing out, he said he has never seen a chain brake wear out even on professional logger equipment.
With regard to pole saw safety, my Brother in Law said he saw in the new where a man cut his wifes head off with a pole saw. He was standing on a ladder to get a rather tall branch and his wife was holding the ladder. Somehow he lost his balance (likely from the limb hitting him), fell and the saw was running full throttle and just cut her head off. One of the problems with a pole saw is that it doesnt have any kind of brake mechanism for safety. You may not get cut, but you can easily cut an onlooker, so best to keep watchers far away.
Another gruesome thing he mentioned was a guy cutting up a tree that had blown over and his grandkids were playing around the area. When he had cut off the last tree length, the root ball flopped back into the hole. Later they could find one of his grandkids and after calling out all the local emergency personnel for searching, a fire chief asked him when was the last time he saw the child and when he said it was while cutting the tree up, they called for a front loaded to come in and lift the root ball. The child was under the root ball and had suffocated to death (not crushed as I would have thought).
One more item of interest on the chaps. Seems that they are like safety belts, one use and they are finished. If you ever get the saw into them and they pull out the liner that stalls the saw, they should be discarded. The liner material is pulled up to the cut and make thin spot or voids in other areas so they are a one use item. Also they need to be kept clean, wash the grease and oil out of them so the fibers inside stay fluffy so they can do their job.