Several publishers offer introductions to learning extensible markup language. We've reviewed XML courses by DigitalThink, MindLeaders, Element K, and NETg. Though each of those publishers assumes familiarity with HTML and XML, their courses differ considerably in scope and presentation.
The courses fall into two categories: those that teach you how to write XML and those that give you an overview of markup language.
If you need to learn how to apply XML, DigitalThink's XML Fundamentals is your best bet. Although it's relatively expensive, you get a lot for your money. After taking the course, you can expect to produce reasonably sound XML documents.
However, many people need only a basic overview of XML. The courses by MindLeaders, Element K, and NETg are aimed at those users. …