I know what you mean. I could never have imagined as many books as these existing, and you can actually order more to be brought here if you like. [Armin can't help geeking out about the books a little.] There are more books here than any one person in the world could ever read in their lifetime.

That reminds me, um, you should sign up for a library card. You'll need it to borrow the books, though it's free to come in and read while the library's open. If you have ID, I'll set you up, and then I'll show you how to find your way around in here.

[Assuming that goes smoothly, Armin will move right on to explaining how to search for a book on the computer and find it on the shelves, and suggesting a few thick volumes of 'brief' histories of Russia and the United States.]