There is a lot of useful information on how things work out there, if you want to learn. YouTube videos took the place of popular science magazines largely, and perhaps it will be some different medium tomorrow. But the knowledge is there, and just like in the past you have to go and look for it, just in different places.

There are also still courses you can take to learn practical skills, I for example took a short blacksmithing course a few years ago. A lot of fun and way harder than it looks (at least if you want to get good at it, my goal was just to give it a try and have fun, and 5 evenings was enough for that).