Metadata for the Web - RDF and the Dublin Core - Introduction to RDF and DC showing examples of how they can be used for structure web metadata by Andy Powell, UKOLN presented at UKOLUG - http://www.ukoln.ac.uk/metadata/presentations/ukolug98/paper/intro.html
RDF Metadata and Agent Architectures - Paper by Ora Lassila, Nokia & W3C, given at Workshop on Compositional Software Architectures, Monterey, California - http://www.objs.com/workshops/ws9801/papers/paper056.html
What is...RDF? - An introductory explanation of RDF by Rachel Heery in Ariadne magazine online. - http://www.ariadne.ac.uk/issue14/what-is/
RDF and Metadata - An introduction to RDF by Tim Bray, XML.com covering why would you want to use it and the relationship between RDF and XML. - http://www.xml.com/pub/a/98/06/rdf.html
Web Architecture: Describing and Exchanging Data - An analysis of the XML Schema and the RDF Schema designs as used to further the semantic description of the web. - http://www.w3.org/1999/06/07-WebData