<p>What references offer a good summary/tutorial for using RDF/OWL?  There seem to be enough tools (Protege, Topbraid, Jena, etc.) that knowing the syntax of the markup languages is not necessary, but knowing the concepts is, of course, still critical.  </p>

<p>I'm working through the w3c documents (particularly the <a href="http://www.w3.org/TR/rdf-primer/" rel="noreferrer">RDF Primer</a>) but I'd like to find other resources/techniques to use as well.</p>

For pragmatic use of RDF, Shelley Power's book
Practical RDF
is a good start.
The
ESW Wiki
is also a good resource
There's also
David Beckett's RDF Resource Guide
Tim Berners-Lee's notes
are always a good read
There's a
bunch of links
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