A public library is a library that is accessible by the general public and is generally funded from public sources, such as taxes. It is operated by librarians and library paraprofessionals, who are also civil servants.

There are five fundamental characteristics shared by public libraries. The first is that they are generally supported by taxes (usually local, though any level of government can and may contribute); they are governed by a board to serve the public interest; they are open to all, and every community member can access the collection; they are entirely voluntary in that no one is ever forced to use the services provided; and they provide basic services without charge.In modern societies all activities of the people are organized through institutions. So, social institution is a product of the society. It is created to work as a medium for expressing its social processes and it carries them out through its techniques developed for the purpose. It is a form of social order.

Lowell Martin states: “A social institution is an integrated pattern of human relationship established by the common will and serving some vital human need.” This definition indicates that social institution deals with the integrated pattern of human being in the society. Their pattern is caused through the interaction among the people as a vital social need. For example, religious institution looks after the belief and unity, educational institution like school, college, and universities promote knowledge, skill and socialization processes of the society. These institutions incorporate a