DOCBOOK-APPS: looking for docbook/xml/xslt/etc courseware

i have a couple clients who are interested in a course in
xml/docbook and associated processing.  i could write it myself
at this point, but it would take some time.

  does anyone have recent, up-to-date and battle-tested courseware?
feel free to drop me a note and we can talk.  or point me at a
web site where i can take a look at some offerings and we can
negotiate later.  thanks.

rday