If you can do volunteer work at libraries, do that! It'll help a lot. And if you genuinely want to be a librarian, you will need a master's degree—and it's better to go into that with more knowledge of the field itself. There's a lot more going on that just organizing books. :)

The problem there, of course, is that a lot of the time libraries do customer service, especially at public libraries. At academic libraries, you might not be public-facing as much but those jobs still need to be filled, and part of your degree is in being a more helpful google interface. If you aren't doing public-facing work, you're still working with a lot of specialized programs and spreadsheets and bureaucracy.

During the library degree you'll be able to specialise in academic/public/archives (which I do not understand, as neither of my friends who did library degrees were interested by it). But, like. If you're interested in working at a library, talk to librarians about the realities of their jobs and not just the aesthetic part of getting to be around books all day.