A librarian is a professional who manages and organizes collections of information and resources in libraries. They help patrons find books, articles, and other materials, and often provide guidance on research methods. Librarians also curate collections, ensuring that the library has a diverse range of resources to meet the needs of the community. In addition to traditional libraries, librarians may work in schools, universities, or specialized institutions. They often use technology to catalog resources and may assist with digital literacy, teaching patrons how to access and evaluate information online. Their role is essential in promoting literacy and lifelong learning within society.