The Louisville Free Public Library provides access to all kinds of information and services to everyone in the Greater Louisville area. This is a great library system that has a very wide variety of books, periodicals, and every other type of information you can imagine. They even have tons of genealogical records from all over the state at the main branch.
The main branch is amazing and beautiful. I highly recommend spending some time enjoying the very cool, historical architecture. But you don't have to go downtown to take advantage of the services LFPL provides. You can find a branch in almost every neighborhood in town, and you don't have to spend all day looking through the shelves to find what you want. Just go to the library's web site, search for what you need, then request the item and pick out which branch at which you'd like to pick it up. They'll call you as soon as it's available and you can pick it up. So, if you live in Shively and would like a book that's shown at the Jeffersontown branch, they'll send it right over! AND you can return your books at any location in town!