You can read this manual in the order presented here if you want to get a good feel of how to apply Morphon to your XML editing needs. If you haven't installed the editor yet, you should start with Chapter 5., Installation.
In Chapter 2., Overview of Morphon XMLEditor you will find a gentle walkthrough, touching on a number of XML concepts. Chapter 4., Description of the user interface walks you through the many dialogs and other user interface elements in the editor.