The libraries are laid out in rings and layers: there's a ring of shelves that form a backdrop to the people sitting nearest the window, and that create corners for people sitting among the shelves. The many curved bookshelves work to create lots of isolated and private corners, with a few larger spaces near the center of the library. The thick carpet means that almost anywhere is comfortable for lying down or sitting down among the books, and there are normal chairs, as well as beanbags and thickly padded ottomans to sit on all according to what you'd find most comfortable. The library is divided into 3 major sections: Periodicals, Anthologies and Fiction.
Periodicals are nonfiction books, generally in quite uniform sizes, that cover a relatively broad area and collect lots of research articles that all came out within some period of time; they have titles like RRF Railways 2604-155, and reading the back matter just shows a list of article names and authors. Anthologies are nonfiction books full of articles and chapters all on some relatively specific themes, or they're just compilations of "the most mind-bending papers ever". Textbooks are in the Anthologies section, and the selection is intimidatingly large.
Finally, in the Fiction section, you have full-length novels and short story collections, and there are tons of books that are meant to put together the complete works of particularly famous and successful authors. There are also an enormous variety of short-story collections that are in their Periodicals and Anthologies subgroupings in the Fiction section.