So a regular library basically

Just keep going until you find the book that tells you how to exit the library.

Why would you want to leave though?

Once while browsing through the stacks, my eyes fell upon a book titled something like "How To Love Your Kids Even If They're Complete A**holes." I took a photo of that and kept it for future use, which hasn't really presented itself.

And the librarian is an orangutan.

This happened to Galadriel in “A Deadly Education”. She found an incredibly rare and powerful book trying to get out of the stacks while the library tried to keep her in.