Frequently Asked Questions (FAQs) about RDF
Answers to general RDF questions by the W3C team.
RDF Tutorial
An introduction to RDF in HTML, PS and PDF forms.
The Semantic Web In Breadth
A comprehensive introduction into RDF and Semantic Web technologies by Aaron Swartz
The Semantic Web: An Introduction
A gentle introduction to RDF and the Semantic Web by Sean B. Palmer.
What is RDF?
A good introduction to RDF (updated version of RDF and Metadata) by Tim Bray