Yes, what ExSoldier said. Many NRA handgun safety course instructors have guns you can use (you need to ask). I would recommend taking the course prior to selecting a handgun since it helps you evaluate the different safety considerations.
Absolutely correct. I should have said that in my post. I often allow clients to shoot my firearms. However I have one personal iron clad rule besides all the safety rules: Everybody, no matter what their level of experience, that takes my class, they start on the line with one of my .22LR handguns. If they are a novice they use my Ruger Super Single Six SA. That's another layer of safety.
I watch everybody's technique and safety after the class and throughout the range phase. But everybody from total novice to Airborne Ranger starts on the 22, even if they brought their own. Proper technique and more importantly IMPROPER technique is easier to diagnose with the low recoil/flash/noise of a 22.