Yes, the game is a tailored experience you can pick up and quickly become engaged in. I suppose engineering for fun takes more self direction. Your idea for a wiki sounds interesting, though there’s enthusiast communities on reddit and elsewhere that may already have answered “how to get started” questions. So in a way, the resource you mention exists as data on the internet. For much of what you want to learn, you’ll find out how to get started with some time at the search terminal.