Go to www.javaworld.com and look at the articles in the Enterprise --> Web Services section. There's good introductory material. You might also check out DeveloperWorks at IBM - that site has plenty of material as well.
Thanks Ulf. However, I am not finding any link that describes how to perform the build and deployment of the web services in a step by step manner with respect to a particular runtime. Appreciate if you can share anything that you know of.