A library catalog is a systematic list of all the materials available in a library, including books, journals, and multimedia items. It helps users find specific resources by providing essential information such as titles, authors, publication dates, and locations within the library. Many libraries now offer online catalogs, making it easier for patrons to search for items from home. Library catalogs can be organized in various ways, such as by author, title, or subject. They often include features like advanced search options and filters to refine results. This tool is essential for efficient research and helps users discover new materials related to their interests.