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There are two ways to look things up in Wikipedia: by searching or by browsing. Links to all of Wikipedia's main contents pages are presented below, and they in turn link to the more specific pages.
 * If you know the name of an article for which you are looking, simply type it into Wikipedia's search box.
 * If you would like to look around the encyclopedia to see what is on it, use Wikipedia's Contents pages. Lists and indices are examples of contents for a published work, and Wikipedia has many of each, including a complete alphabetical index and indices by category.

Overview articles
Overview articles summarize broad topics like language, speech, or the human body. Through the wikilinks on these pages it is possible to navigate to articles narrower in scope, such as cell biology or Carl Linneaus. Overview articles aim to give a broad introduction and can be a good place to start leaning about a topic.
 * Wikipedia's overview articles

Vital articles
Vital articles are lists of subjects for which Wikipedia should have corresponding high-quality articles. They serve as centralized watchlists to track the status of Wikipedia's most important articles.
 * Vital articles level 1 – 10 most important articles
 * Vital articles level 2 – 100 most important articles
 * Vital articles level 3 – 1,000 most important articles
 * Vital articles level 4 – 10,000 most important articles

Classification systems
Knowledge can be ordered in many different ways, each classification with their own pros and cons, from heirarchical systems to interconnected webs of knowledge. Wikipedia employs and number of different classifications to help you navigate, a short list of different systems follows:

Outline pages
Outline pages have trees of links in a heirarchical format. These outlines show a visualization of how topics relate to each other, and can be useful as condensed alternative to overview articles.
 * Portal:Contents/Outlines a list of Outline-pages, organized by subject
 * Outline of academic disciplines covers subjects studied in academia, and links directly to overview articles

Third-party classification systems
Various third-party classification systems have been mapped to Wikipedia articles, which can be accessed from these pages:
 * List of Dewey Decimal classes
 * Library of Congress Classification
 * Outline of Roget's Thesaurus

List pages
List pages enumerate items of a particular type, such as the List of sovereign states or List of South Africans. Wikipedia has "lists of lists" when there are too many items to fit on a single page, when the items can sorted in different ways, or as a way of navigating lists on a topic (for example Lists of countries and territories or Lists of people). There are several ways to find lists:
 * Portal:Contents/Lists – A limited single-page collection of lists and lists of lists
 * List of lists of lists – A broad single-page collection of lists of lists
 * Category:Lists – Browse lists comprehensively via the multi-page Wikipedia category system

Timelines
Timelines are chronological lists of events, often including links to more detailed articles. There are several ways to find timelines: Of particular interest may be:
 * List of timelines has a long single-page collection
 * Category:Timelines has a comprehensive multi-page collection via the Wikipedia category system
 * List of centuries and decades
 * List of historical anniversaries—e.g. events on January 1 of any year
 * 2024—major events this year
 * Portal:Current events—featured current events and related project activities
 * Deaths in 2024—lists notable people who died this year
 * Category:Graphical timelines—graphical timelines in the category and subcategories, arranged alphabetically

Category system
Wikipedia's collection of category pages is a classified index system. It is automatically generated from category tags at the bottoms of articles and most other pages. Nearly all of the articles available so far on the website can be found through these subject indexes.

If you are simply looking to browse articles by topic, there are three top-level pages to choose from:
 * Category:Main topic classifications—probably what you are looking for: Arts, History, Technology, etc.
 * Category:Fundamental categories—organizes articles into "abstract" ontological categories in a way that every article can reasonably be expected to be classified within it
 * Portal:Contents/Categories—a hand-crafted list of first- and second-level topic categories

For biographies, see Category:People.

Category:Contents is technically at the top of the category hierarchy, but contains many categories useful to editors but not readers. Special:Categories lists every category alphabetically.

Alphabetical lists of articles
Wikipedia's alphabetical article indexes
 * Special:Allpages lists all of the current pages in Wikipedia.
 * Portal:Contents/A–Z index provides an easy way to skip to a particular part of the alphabet in the list of all articles.
 * Lists of alphabetical indexes
 * Category:Wikipedia indexes—alphabetical list of topic indexes
 * Portal:Contents/Indices—indexes sorted by topic area

Portals
Portals include featured articles, images, news, categories, excerpts of key articles, links to related portals, and to-do lists for editors. There are two ways to find portals:
 * Portal:Contents/Portals – A single-page list of portals
 * Category:Portals – Browse portals comprehensively via the Wikipedia category system

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.
 * Category:Wikipedia books (community books)—an alphabetical list of Wikipedia books
 * Category:Wikipedia books—a list of Wikipedia books, categorized by topic

Glossaries
Glossaries are lists of terms with definitions. Wikipedia includes hundreds of alphabetical glossaries; they can be found two ways:
 * Portal:Contents/Glossaries – A single-page list of glossaries

Spoken articles
Growing collections of Wikipedia articles are starting to become available as spoken word recordings.
 * Category:Spoken articles

Featured content
Featured content is the best Wikipedia has to offer, via vigorous peer review. Presented by type:
 * Featured articles·Featured lists· Featured pictures· Featured portals· Featured topics

Most popular articles

 * Top 5000 pages (of the last week)
 * —Top 30 most popular articles by categories, with user comments on traffic jumps


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