So I’ve figured out how to use Bazaar enough to push the first version of the book onto the Launchpad site. You can get the current version here. Note that it is quite crude; there’s lots of code examples in the book that don’t work (haven’t been properly translated from their Java versions, usually).
However, you should be able to say “make html” or “build html” (although you’ll need make on your system, which if you’re on windows means the simplest solution is to install cygwin (you need to tell it to add ‘make’, and ‘chere’ is also very useful).
Give it a try, just to see if there are other issues I haven’t figured out.