I'm honestly surprised how accurate some simulators can be. Not saying you could make a career choice based on how well you do one but you can for sure learn some basics in things like Power Washing Simulator, Euro Truck Simulator, Lawn Mower Simulator, most farming sims, and yes the PC building sim is not bad. I think I remember watching Linus Tech Tips play it and he was pretty impressed. Not 100% but good enough to get the idea.

Goat Simulator can teach how to be a goat and I love that lol (that was a joke but you get the point)

Edit: not necessarily a sim but there is a gun disassembly game I played once and that taught me a lot about stripping and field stripping weapons. I've forgotten most of it but enough to know the basics.