This video shows some of Wikipedia's contributors, explaining their user names.
This video focuses on the motivations and passion of Wikipedians, and ends with a comment by Wikipedia founder Jimmy Wales about what makes the project special.
This video is a direct invitation by Wikipedians to "click that [edit] button and see what happens".
In this video, Wikipedians talk about the joy of being part of a global community of editors.
The Impact of Wikipedia A series of powerful videos of people from around the world explaining how Wikipedia has impacted them
Wikipedia Vision – an animated map that highlights live edits from users around the world as they happen, demonstrating the global nature of the project.
wikistream – a visualization showing a stream of edits to the most popular Wikipedia projects.
Manypedia – a tool for comparing a specific Wikipedia page from a language edition Wikipedia (for example, English) with its equivalent page on another language edition Wikipedia (for example, Arabic), exploiting automatic translation and additional statistics about both pages such as number of edits and editors.
WikiTrip – a tool for visualizing the animated evolution in time of two kinds of information about the Wikipedians who edited the selected page: their location in the world and their gender.
Welcome to Wikipedia
Ten Simple Rules
Introduction to free licenses
Evaluating Wikipedia article quality
The Wikipedia Cheatsheet
This 17-page guide covers creating a user account, editing basics, communication, and how articles evolve and are evaluated, and includes a quick reference to help you to remember frequently used wiki markup.
This editorial from PLoS Computation Biology focuses on how to contribute effectively as an expert.
This brochure helps you understand the basic concepts of free licenses, as well as terms like "CC-by-SA" and "public domain".
This reference guide covers specific steps you can take to get the most out of Wikipedia, as well as a look at how its quality system works.
This one-page quick reference helps you to remember the most frequently used wiki markup commands.