This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
UDDI and ebXML have been someone competitive architectures which are now coming together at least in compatibility. There is a white paper at this link entitled "Using UDDI to Find ebXML Reg/Reps". This could show you how to use the two together. As far as general introductory web services info and what is located on what server you might want to check out the tutorial on Sun's Java site.