Note on licensing
How Wikipedia Works is a free cultural work. It was originally published under the GFDL license. At the time of publication, Wikipedia itself was released under the GFDL.
Phoebe Ayers and Charles Matthews also relicense the book under the CC-BY-SA license, as Wikipedia itself now uses this license.
The authors encourage re-use, translation, updates, and re-mixing of the book. For now, the full text is available on the Internet Archive.