A library is a collection of information or similar resources that are stored together. Library provides physical or digital access to the information that can be stored physically in a building, in a room or a virtual space like the internet. Information stored can be of any type, and about everything and the collections may include books, videotapes, manuscripts, films, DVDs, databases, CDs, cassettes, newspapers, periodicals, maps, documents and so on.
The first known libraries were discovered in Sumer, dating back even to 2600BC. They consisted of archives and an ancient form of writings. The biggest and earliest libraries that included thousands of books and archives were found in Greece and are dated back to the classical period of the fifth century BC.
Libraries are created to store collected information that ease the process of searching for people and are generally owned by a corporation, private individual, institution or a public body. It is impossible for most of the population to afford a collection of books in order to get the needed information. For example, if researchers bought all the required books to do research, it would make the process very long or even impossible.
Except just offering books and different materials to interested people, libraries also provide the service of a librarian that is a professional in finding the needed information or offering the relevant one. Also, their duty is to control the visitors as some of them may take the books home without warning or without paying a fee and leaving no identification document for it. They also provide quiet areas for studying and some common areas for collaborations and group studies. In order to make the process comfortable, they also control the noise and can even ask the visitor to leave the library in case of inappropriate behavior.
In most cases, libraries required payments for entering and staying for several hours. Although, in lots of modern ones, there is an unrestricted access to information. Big libraries mostly have restricted accesses to some areas as they store a large number of books or archives that have only one exemplary and are very old, expensive and inclusive. This kind of areas need a particular Access Pass or entry fee, and they are generally protected by guards. So, not all information is available for visitors.