Here are some of the good websites that I found on the Semantic web.
http://www.w3.org/DesignIssues/Semantic.html (Really explain what is/What is not the semantic web)
http://infomesh.net/2001/swintro/ (A full overview of the semantic web - Entry level to the expert)
http://www.xml.com/pub/a/2000/11/01/semanticweb/ (Semantic web, really a future? )