Library is an institution responsible for the selection, acquisition, organization, preservation, retrieval, and dissemination of information resources FOR USE. There are different types of library namely:
a. National Library: The apex library of any country, usually under the control of the Federal government.
b. Public Library: Founded by state or local governments to cater for information needs of all and sundry.eg Lagos state library board
c. Academic libraries: these are found in higher institutions of learning eg universities, polytechnics etc
d. School library: Found in primary and secondary schools only.
e. special library: Established to meet specialized information needs of targeted users. eg Law libraries at court or medical libraries at hospitals.
f. private/ personal library: our personal libraries at home or office fall in this category.
g. virtual/digital or e-library: this is the kind of library whose collections are accessible online either through computers or other mobile devices.

Types of information materials in the library.
Any of these materials could be found in the library:
a. Monographs or textbooks
b. Fictions
c. Reference materials: such as dictionary, maps, encyclopedia, almanac, books of World records etc
d. serial collections : newspapers, magazines, academic journals etc
e. braille materials
f. juvenile materials
g. Audio recordings, videos, musicals, etc

The library is regarded as a storehouse of knowledge, and anybody aspiring higher in life cannot be far from using one. It makes available the knowledge of the past for the benefits of the present and to plan for the future.