I need to learn XML Web Services

I need to learn XML Web Services. Does anyone knows good books to learn from?

if you want to learn the basics only you can refer the online notes and tutorials. i suggest you to check out with the following links.
http://msdn.microsoft.com/en-us/library/ms996507.aspx
http://developer.mozilla.org/en/XML_Web_Services
http://www.startvbdotnet.com/web/default.aspx

Thank you very much! But, I think I have the basics. I think that I need nooks not articles!