Both my grandfathers shot a little with me when I was growing up. The one lesson I learned best: Shooting a .22 pistol, after a certain number of shots my grandpa took the gun, pull out the empty mag and showed me, then said aim again and pull the trigger. I did and as I'm sure you have guessed there was still a round in the chamber. Guns are always loaded, even when you think they are empty.
Oddly enough, around the time I was old enough to start getting interested in guns my dad stopped hunting, his guns were hidden away, and to this day I have shot with him exactly one time - as a young kid when he was sighting in a rifle for hunting season. I don't know if it was my mother's wish for me not to be exposed to shooting and hunting or what. Plenty of pics of my dad with guns when he was growing up, and after college I learned he still owned guns and even had a concealed weapons permit.