Web Services Essentials (O'Reilly XML)
"This book is not supposed to be a thorough guide to RPC using XML... however, if you're just getting started creating apps which interact with a remote server over HTTP, using any of the languages, then it gets you started with the fundamentals without confusion or jumping in too deeply without sufficient background knowledge of the procedures used." Verdict: Useful coverage of many aspects of XML service creation if you're unfamiliar with many of the languages. 8/10 Linux Format, August 2002  "This book as a whole covers its material as you would expect. If you are wanting an introduction to creating web services, then it is a good place to start. It assumes a familiarity with Java and XML, and these are covered comprehensively elsewhere in the O'Reilly stable. Overall, it is a solid introduction to web services."  Joel Smith, news@UK, December 2002