I thought the class Homer had to take to become a monorail driver was a tongue-in-cheek look at what it takes to operate the trains of tomorrow. But glancing through this Disneyland Operator Guide from 1966, it doesn't look that difficult.
Now I'm going to assume this manual -- which you can download here in its entirety -- is accompanied by quite a bit of in-vehicle training. But besides some obscure hand gestures, knowledge of the park route, and willingness to smile, there doesn't seem to be much to it.
For some reason I thought that ferrying thousands of tourists around an amusement park in a train perched atop an elevated track warranted more than 34 pages of instruction. But I guess I was wrong. So the next time I'm at Disneyland and the monorail driver has a sudden heart attack, when someone asks "is there a monorail driver on board?" I'll confidently rise to the occasion and safely get all those passengers back to Tomorrowland. [Disneyland Monorail Operator Guide via BoingBoing]