www.freeprogrammingresources.com

Free XML FAQs

Flash-XML FAQ
The Flash-XML FAQ aims to provide a definitive source for common questions about Flash and its interaction with XML (and XML datasources).

The XML FAQ
XML faq at Oreilly.

XML Namespaces FAQ
This looks like a comprehensive faq about xml namespaces.

irt.org
Extensible Markup Language (XML) FAQ Knowledge Base.