Introduction A librarian is a person who works professionally in a library, providing access to information and sometimes social or technical programming. In addition, librarians provide instruction on information literacy. They are usually required to hold a graduate degree from a library school such as a Master's degree in Library Science or Library and Information Studies.

Who is Librarian? Traditionally, a librarian is associated with collections of books, as demonstrated by the etymology of the word "librarian" (from the Latin liber, "book"). The role of a librarian is continually evolving to meet social and technological needs. A modern librarian may deal with provision and maintenance of information in many formats, including: books; electronic resources; magazines; newspapers; audio and video recordings; maps; manuscripts; photographs and other graphic material; bibliographic databases; and web-based and digital resources. A librarian may also provide other information services, including: information literacy instruction; computer provision and training; coordination with community groups to host public programs; assistive technology for people with disabilities; and assistance locating community resources. Appreciation for librarians is often included by authors and scholars in the acknowledgment sections of books.

Positions and duties Specific duties vary depending on the size and type of library. Olivia Crosby described librarians as "Information experts in the information age". Most librarians spend their time working in one of the following areas of a library: Archivists can be specialized librarians who deal with archival materials, such as manuscripts, documents and records, though this varies from country to country, and there are other routes to the archival profession. Collection development or acquisitions librarians monitor the selection of books and electronic resources. Large libraries often use approval plans, which involve the librarian for a specific subject creating a profile that allows publishers to send relevant books to the library without any additional vetting. Librarians can then see those books when they arrive and decide if they will become part of the collection or not. All collections librarians also have a certain amount of funding to allow them to purchase books and materials that don't arrive via approval. Electronic resources librarians manage the databases that libraries license from third-party vendors. School librarians work in school libraries and perform duties as teachers, information technology specialists, and advocates for literacy. Instruction librarians teach information literacy skills in face-to-face classes or through the creation of online learning objects. They instruct library users on how to find, evaluate, and use information effectively. They are most common in academic libraries. Media specialists teach students to find and analyze information, purchase books and other resources for the school library, supervise library assistants, and are responsible for all aspects of running the library/media center. Both library media teachers (LMTs) and young adult public librarians order books and other materials that will interest their young adult patrons. They also must help YAs find relevant and authoritative Internet resources. Helping this age group to become lifelong learners and readers is a main objective of professionals in this library specialty. Outreach librarians are charged with providing library and information services for underrepresented groups, such as people with disabilities, low income neighborhoods, home bound adults and seniors, incarcerated and ex-offenders, and homeless and rural communities. In academic libraries, outreach librarians might focus on high school students, transfer students, first-generation college students, and minorities. Public service librarians work with the public, frequently at the reference desk of lending libraries. Some specialize in serving adults or children. Children's librarians provide appropriate material for children at all age levels, include pre-readers, conduct specialized programs and work with the children (and often their parents) to help foster interest and competence in the young reader. (In larger libraries, some specialize in teen services, periodicals, or other special collections.) Reference or research librarians help people doing research to find the information they need, through a structured conversation called a reference interview. The help may take the form of research on a specific question, providing direction on the use of databases and other electronic information resources; obtaining specialized materials from other sources; or providing access to and care of delicate or expensive materials. These services are sometimes provided by other library staff that have been given a certain amount of special training; some have criticized this trend. Systems librarians develop, troubleshoot and maintain library systems, including the library catalog and related systems. Technical service librarians work "behind the scenes" ordering library materials and database subscriptions, computers and other equipment, and supervise the cataloging and physical processing of new materials. A Youth Services librarian, or children's librarian, is in charge of serving young patrons from infancy all the way to young adulthood. Their duties vary, from planning summer reading programs to weekly story hour programs. They are multitaskers, as the children's section of a library may act as its own separate library within the same building. Children's librarians must be knowledgeable of popular books for school-aged children and other library items, such as e-books and audiobooks. They are charged with the task of creating a safe and fun learning environment outside of school and the home. A young adult or YA librarian specifically serves patrons who are between 12 and 18 years old. Young adults are those patrons that look to library services to give them direction and guidance toward recreation, education, and emancipation. A young adult librarian could work in several different institutions; one might be a school library/media teacher, a member of a public library team, or a librarian in a penal institution. Licensing for library/media teacher includes a Bachelor or Master of Arts in Teaching and additional higher-level course work in library science. YA librarians who work in public libraries are expected to have a master's degree in Library and Information Science (MLIS), relevant work experience, or a related credential.

Additional responsibilities Experienced librarians may take administrative positions such as library or information center director. Similar to the management of any other organization, they are concerned with the long-term planning of the library, and its relationship with its parent organization (the city or county for a public library, the college/university for an academic library, or the organization served by a special library). In smaller or specialized libraries, librarians typically perform a wide range of the different duties.   Representative examples of librarian responsibilities: v Researching topics of interest for their constituencies. v Referring patrons to other community organizations and government offices. v Suggesting appropriate books ("readers' advisory") for children of different reading levels, and recommending novels for recreational reading. v Reviewing books and journal databases v Facilitating and promoting reading clubs. v Developing programs for library users of all ages and backgrounds. v Managing access to electronic information resources. v Building collections to respond to changing community needs or demands v Creating pathfinders v Writing grants to gain funding for expanded program or collections v Digitizing collections for online access v Publishing articles in library science journals v Answering incoming reference questions via telephone, postal mail, email, fax, and chat v Making and enforcing computer appointments on the public access Internet computers.

Other Words- Basic categories of workplace settings for librarians are routinely classified around the world as: public, academic, school, and special. Some librarians will start and operate their own business. They often call themselves information brokers, research specialists, knowledge management, competitive intelligence, or independent information professionals.

Reference:   1. "Become a Librarian!". Central Jersey Regional Library Cooperative. Retrieved 2008-09-01. 2. a b Anders, Rebecca (1978). Careers in a Library. Minneapolis: Lerner Publications Company. ISBN 0-8225-0334-4. 3. McKinzie, Steve (October 2002). "For Ethical Reference, Pare the Paraprofessionals". American Libraries. 33 (9): 42. 4. "YALSA". Retrieved April 1, 2011. 5 https://en.wikipedia.org/wiki/Librarian. Retrieved February  1, 2017.