>I'm looking for beneficiary good articles on XML.

Is there anything specific you want to learn about XML? Here are a few good web sites with articles on XML and XSLT for you to start reading...

http://msdn.microsoft.com/xml
http://xml.com
http://www.w3.org/XML/
http://www.w3schools.com/xml/
http://www.fawcette.com/xmlmag/
http://www.xmlfiles.com/