Between 2005-2007 I wrote a "touching DITA" series of introductory articles about aspects of DITA use for the ISTC Communicator magazine.  I attach the articles here in case they are of value to anyone in the DITA community. (Note that although much is still the same now, the DITA, the Open Toolkit, and Task Modeler have moved on a bit since the articles were published!)

1. ISTC Communicator Summer 2005 - DITA introduction.pdf