What's there to know:
1. You just have to rack it to scare away the BG
2. You can't miss
3. It will knock down the BG if you do shoot like the hammer of Thor (preferred analogy for gun lists).
Oh, wait - never mind!
I have had this told me by very smart gun folks.
BTW, for something else I was working on, I read a description of a police officer short stroking his pump under extreme stress. If an instrument has the possiblility of needing a physical manipulation that is subject to such stress effects - one might argue that it is difficult to use given standard human factors analyses.