This is the official home page for DocBook: The Definitive Guide. The definitive guide, written by Norman Walsh and Leonard Muellner and published by O'Reilly & Associates, Inc., is the official documentation for DocBook.

In support of DocBook users everywhere, this book and its source SGML are available online at both this site and at OASIS. Of course, you're always free to buy a copy, too, if you'd like :-).

DocBook XSL: The Complete Guide by Bob Stayton and published by Sagehill Enterprises is the definitive guide to using the DocBook XSL stylesheets. It provides the necessary documentation to realize the full potential of DocBook publishing. It covers all aspects of DocBook publishing tools, including installing, using, and customizing the stylesheets and processing tools.

Also available: buttons, shirts, and other swag. Wear your duck on your sleeve! Well, your chest anyway.

Also check out the DocBook Wiki.