Here’s an interesting find. I did a search on Amazon for Drupal and found this yet-to-be-published book, from APress:
Building Online Communities with Drupal, phpBB, and WordPress, by Robert T. Douglass, Mike Little and Jared W. Smith (APress, November 2005, ISBN 1-59059-562-9).
(The hyperlinks point to the Apress website, not Amazon UK.)
Two technologies that I already use (phpBB and WordPress) and one that I’d like to learn more about (Drupal).