Here's a map of all of them. Our main library, Davis, as well as the Undergraduate Library (usually called the UL) and Wilson Library Special Collections are in the heart of Central Campus, very close to Lenoir Dining Hall, Student Stores, and the Student Union.
Your OneCard is your library card, and your Onyen and password give you access to all our online resources from anywhere with internet access.
The catalog is the search tool to find books, and you can search by title, author, or topic. You can either visit the shelves and grab the book yourself, or request books to be put on hold and pick them up at the library branch that's most convenient for you.
Most university libraries use the Library of Congress system to organize books -- here's a guide on how to read the call numbers, or the little set of letters and numbers that tells you which shelf the book is on. If it seems complicated...you're right! It can be. Ask for help if you can't find what you need.