How Wikipedia Works is a 2008 book by Phoebe Ayers, Charles Matthews, and Ben Yates. It is a how-to reference for using and contributing to the Wikipedia encyclopedia, targeted at "students, professors, and everyday experts and fans". It offers specific sections for teachers, reusers, and researchers.
How Wikipedia Works (And How You Can Be a Part of It) is published by No Starch Press, part of their series of technical how-to books. The Register called it "a great one-stop source for information of the world’s go-to source for information." The book was originally published under the GNU Free Documentation License. At the time of publication Wikipedia was also released under the GFDL. The book has since been relicensed under the CC BY-SA as Wikipedia now uses this license. It was designed as a reference work more than a how-to guide, with detailed bibliographies for each sections.