It's funny to see people walk around with the latest camera gear; the super-duper zoom, the integrated self-cleaning sensor unit, and the whatever else they came out with yesterday; and realizing they have absolutely no clue how to use them.
So let's forget about the lens, the aperture, and the mere ability to focus. The Pinhole 101 is as simple as can be. Light from a scene passes through a fine hole and projects an inverted image on the opposite side of the box. It uses 35 mm film and features a flash light for taking pictures in the dark.