Wikipedia: the missing manual

Editing for the first time

Documenting your sources

Setting up your account and personal workspace

Creating a new article

Who did what: page histories and reverting

Monitoring changes

Dealing with vandalism and spam

Communicating with your fellow editors

WikiProjects and other group efforts

Resolving content disputes

Handling incivility and personal attacks

Lending other editors a hand

Article sections and tables of contents

Creating lists and tables

Adding images

Getting readers to the right article : naming, redirects, and disambiguation

Categorizing articles

Better articles: a systematic approach

Deleting existing articles

Customizing with preferences

Easier editing with JavaScript.