These are articles and presentations about DocBook that aren't necessarily tutorials (because there's a separate DocBookTutorials page for those).
DocBook can be a sysadmin's best friend, Joshua Drake
The Making of the DocBook DTD, Dale Dougherty
DocBook, la quatrième dimension de la documentation technique in French and its associated booklet in PDF, CamilleBégnis
Combining Stylesheets with Include and Import, Bob DuCharme
(includes examples of customizing output from the DocBookXslStylesheets)How to avoid learning XML. Provides some samples of what DocBook can be made to look like by running the source of the talk through several different customizations of the DocBookXslStylesheets. DavidCramer
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