One day, the owners son, who didn't like me, told me to taxi a rental 172 to it's tiedown spot and clean it up.
Until then I'd never sat in one, other than to clean it. Certainly I'd never sat in one with a running engine.

I confirmed that he wanted ME to do it, and after he walked away, I got in to do my best. Maybe he did like me after all?
The 172 rental had just been brought back and was still warm.
Ignition switch - Got it. Just like a car, you have to turn it on.
Steering wheel - Just like a car, right? But why could you push it in and out

Gas pedal - ? Those things on the floor? No, they moved the thing in the back. The "gas pedal" can't be a switch. There were two knobs sticking out of the "dashboard", so I turned the nearer, black, knob. Well, it would turn AND move in & out. Turning it one way and it would stay locked in that position. Pulled/pushed for gas? Maybe?
Turned the key. IT WORKED!
The black knob? That was the gas pedal.

I had no idea where the brakes were. But if I didn't give it too much gas, it'd coast to a stop. I was ok with that.
I gave it just a little gas until it started to move forward.
Hay! Those things on the floor that seesawed back and forth would steer the plane! The steering wheel helped a little.
Pushing/pulling the steering wheel did nothing. I had thought that it might make it go forward and reverse

After the plane jerked to a stop or two, I figured out that the seesaw thingies' on the floor were also the brakes!
OK!


To shorten the story, I taxied it to the tiedown spot, and did what I had to do. It was only years later that it occurred to me that the owners son wanted to get me fired.

All this just to say that this is why I like light aircraft.
Unfortunately, there was no way that I could have paid for ground school, never mind paying for flight time.