The document provides an overview of the layout and services available at Johnston Memorial Library. It details that the library has 4 floors, with the basement containing a 24-hour computer lab, cafe, and stacks A-J. The first floor houses circulation, reference, and media collections. The second floor contains serials, government documents, and study rooms. The third floor has stacks K-Z and a quiet zone. Services include the Troy catalog for finding materials, databases for articles, and interlibrary loans.