I prefer teaching basic entry level and firearms safety course over things more advanced. One of the things that I often see is ladies who have had a husband/boyfriend/father/gun-store-employee/etc convince them that the only gun for them is a J-frame.
I'm not bashing the J-frame at all as I regularly carry one, but while they are often pushed on ladies due to the ease of loading, etc, more than a few have triggers that are somewhat lacking. In my last class, one lady brought a model 36 with a trigger so heavy that she couldn't pull it.
I spent time with each of the ladies teaching them how to properly work a slide using push/pull leverage. Before the class was over, each one of them was successfully loading and getting accurate shots with semi-autos including my Glock and a Kimber 1911.
Reports back from husbands/boyfriends/fathers is that I cost one of them his Colt Gold Cup and another that received demands for new pistols from his wife and daughter.