I've written a document on OCD programming, which you can find at [url]http://ocd.juventas.net[/url]. Click 'Documentation (PDF)' under 'OCD programming' in the left pane.
The document basically explains how to edit/create themes and templates using DAXEdit. You will also find a complete list of tags, some examples of how to use them, a few screen shots etc.
Hope this may be of some help to OCD newbies.