“Yeah. Well, I think I’ll need a book on…” Man, this is hard. Usually, reading material on magic in other worlds is kept secret and hidden from the world. They're sometimes only taught by seasoned magic masters, and they are entrusted to teach spells through memorization rather than reading. Then there's the fact that not every human is magically adept, so it would make no sense for a small village to contain books on magic within their local library. It just makes this place a whole lot better, in my opinion. Since magic is commonplace with an entire subsection of ponies dedicated to magic, and even some outliers with others, magic is accepted, expected, and studied. 