Here's how my dad taught me when I was about 10 or 12 years old:
He handed me a camera with the shutter set on 60. He showed me how to focus. He showed me how to turn the aperture ring until the little needle inside the viewfinder was between the lines. He said, "When this little number gets up to 24 give the camera back to me." He sent me on my way with a final warning: "If you bust that camera I'm going to bust your ass!"
When I was done, he took the film out and that was it. Dad had the film developed and he gave me the results.
We sat down together and he told me what was good or bad about each shot. Which ones were in or out of focus. Which exposures were too dark, too light or just right. He took a red magic marker and wrote a note on the back of each one and gave the pictures back to me.
Those pictures are still around, somewhere, because I know my mother has several envelopes full of photos stashed away that are marked, "Taken by Randy."