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Explore Wikipedia's contents


Below are pages to help you select subjects to learn about.


  • Overview   —   main articles of various topics
  • Outlines   —   subject summaries, as follows:
    1. Ease of discovery – outlines show which topics belong to a subject and why
    2. Access to articles – outlines serve as tables of contents of Wikipedia
  • List of academic disciplines and sub-disciplines   —   subjects studied in college or university


More topic lists. Some are lists of lists.

  • Lists   —   of related items

Two of the broadest list collections are:

Alphabetical indexes


Featured content

Featured content is the best Wikipedia has to offer, via vigorous peer review. Presented by type:


Anyone can edit Wikipedia. See our disclaimers for cautions about Wikipedia's limitations.

News about Wikipedia

The Signpost, a community-written and community-edited newspaper, covering stories, events and reports related to Wikipedia, its sister projects, and the Wikimedia Foundation.

Spoken articles

Growing collections of Wikipedia articles are available as spoken word recordings.

Wikipedia books

Wikipedia books are collections of Wikipedia articles that can be viewed, downloaded, or printed into a book. They provide a roadmap for a course of study in a particular subject.


A portal introduces the reader to a subject by presenting images, categories and excerpts of key articles. Portals also guide editing by providing to-do lists.

Categorical indexes

Wikipedia's category system is generated from category tags at the bottom of articles and other pages. The top-level pages are:

  • Categories   —   an index of major categories, arranged by subject (because this page is crafted by hand, it is an exception to the category autogeneration rule)
  • Category:Articles   —   the category in which all article category systems are located
  • Category:Wikipedia categories   —   pages and categories which themselves specifically relate to categories
  • Category:Contents   —   the highest level or "root" category in Wikipedia   —   its subcategories contain various types of encyclopedic content, content that assists with the navigation of the encyclopedia, as well as pages related to the maintenance of the encyclopedia   —   its autogenerated entries are listed at the bottom of the page
  • Category:Fundamental categories   —   the category containing the most fundamental ontological categories, such that every article category system can reasonably be expected to be within it

Wikipedia's other broad categorical indexes are:


Glossaries are lists of terms with definitions.

Most popular articles