Ah, a camera!

This is nephew #1. I have just spent a few minutes deleting the multiple copies of several shots taken by his trigger happy finger. He did have a great fascination with my camera, though, so perhaps I can get him to slowly get to know how the camera works. I know he's familiar with how an iPhone camera works and he's only four - so perhaps it should be a few years before he should be properly introduced to a bigger camera. Any tips based on experience?

Nephew #2, however, took quite a good hand-held shot earlier.