Beginner's Guide to WikipediaThis step-by-step guide brings together some of the best resources to help you get started in Wikipedia
Wikipedia Training/Newcomer's WelcomeThe next few pages will show you the basics of editing Wikipedia, and show you where you can get help if you need it
Wikipedia Instructional MaterialThis page provides links to instructional material useful for Wikipedia users, especially new users
Wikipedia Policy: No Original ResearchTo demonstrate that you are not adding original research, you must be able to cite reliable, published sources that are directly related to the topic of the article, and directly support the material being presented
Introduction to Referencing with Wiki MarkupThis tutorial will show you how to add inline citations to articles, and also briefly explain what Wikipedia considers to be a reliable source
Wikipedia: Editing Basics (Visual Editor)
Using Wikipedia: Crash Course Navigating Digital Information #5