The American Library Association has published two reports that I prepared on metadata and the semantic web.
Report 1 is called: Understanding the Semantic Web: Bibliographic Data and Metadata. This is a broad overview of new concepts, aimed especially at those who are new to the semantic web and to web-based metadata. (Note: To understand the diagrams, you will need a copy of the Errata page, since a key set of the diagrams was borked.)
Report 2 has the catchy title of: RDA Vocabularies for a Twenty-First-Century Data Environment. This builds on the first report, and gives more information about building semantic web vocabularies. This report is for all of you who are wondering what on earth it is that Diane Hillmann and I keep going on about when we talk about registering RDA for semantic web use. It is not overly technical so anyone who reads through Report 1 should be able to understand the general direction that we are advocating.
Feel free to ask questions, make comments, argue with me, or tell me why I'm wrong. I don't claim to have the final answers, and want very much to have a dialog about these concepts that will lead us to a new interesting place to be in library technology.