XML.com FAQs > B. Existing users of SGML (including HTML: everyone who browses the Web)
Question:  B.1 What do I have to do to use XML?
Answer:

For the average user of the Web, nothing except use a browser which works with XML (see the question about browsers). Remember some XML components are still being implemented, so some features are still either undefined or have yet to be written. Don't expect everything to work yet!

You can use XML browsers to look at some of the stable XML material, such as Jon Bosak's Shakespeare plays and the molecular experiments of the Chemical Markup Language (CML). There are some more example sources listed at http://xml.coverpages.org/xml.html#examples, and you will find XML (particularly in the disguise of XHTML) being introduced in places where it won't break older browsers.

If you want to start preparations for creating your own XML files, see the questions in the Authors' Section and the Developers' Section.


This FAQ is from The XML FAQ, maintained by Peter Flynn