So what do I know so far? Webservices are a way of getting things to talk to each other, over the web. It covers a whole load of bits and pieces like SOAP and WDSL and other acronyms. It's all developing pretty fast and it's hard to get an overview of which bits work with which bits.
I'm looking into Cocoon which is a "web development framework", which seems good at getting data to flow, for example from a database through to a web page.
If you want some things to investigate read this article and come back when you understand it all. I don't.