Or wing-it (excuse the pun)...
You drive a car, right? Tractor's the same thing, but slower. I doubt they're going to ask you to make a JCB dance, or to stack bricks with a long-reach crane! I'm a total idiot and I've not found a piece of machinery that I couldn't get to grips with after 30 seconds of instruction yet...
I'm sure there is machinery that takes lots of skill and learning to operate, but that prob won't be on the list.
Sometimes "essential" can still be wishlist, in reality, as well.
Hersh