Look for library science textboks from before ~1996. We used Organizing Knowledge, 2nd ed., by Jennifer Rowley for my intro to LIS back in the day. I wish I could remember the name of the text for my reference class. Ask any reference librarian, they'll be glad to hook you up.

Libraries are huge machines, consisting of paper and humans and furniture and architecture, for accumulating and processing knowledge and making it available. The reference section is the TTY of the library.