I have never had the privilege of introducing a “gun virgin” to shooting. If I ever do, I think I will start with muzzleloader weapons. I think the need to build each load out of its constituent elements would give a lesson in the fundamental properties of all firearms. (After the Kentucky Longrifle, everything else is mere technology.)
Then we would move on to modern firearms using iron sights. Only after achieving a level of competence with irons would we possibly move on to electronic systems, but in general I recommend iron sights for EDC.