In England we have some education that is mostly academic (A levels and university) and some education that's more vocational (City & Guilds and polytechnics). (These are old labels, education keeps changing). I guess the US equivalent would be something like "shop".
Colleges have large libraries. If you want to know about covalent bonds or electron flow you'd go to a university library, but if you want to know how to fix a television you'd go to a technical college library.
I live in Gloucestershire, and there used to be a large technical college in Gloucester. It had a really big library. Libraries need to up date their stock frequnetly, so there is usually a big turnover of books. In Gloucester these books all turned up at one secondhand bookshop.
This shop wasn't much to look at from the outside. I love second hand bookshops, and so I popped in. As you enter you thought "yep, ok, it's actually pretty big". And then you see the sign saying "more books upstairs", and the other sign saying "lots more books out back". I wandered out the hack and it was the ramshackle collection of buildings and sheds that had been knocked through to create a giant warren crammed full of these old library books that taught you how to do stuff.
Pals, I was in heaven!
Rocket guidance systems, hair cutting, repair of valve radios, industrial soup production - you want a "how to" book and it'll be here somewhere. And that's when I saw "