Happy Iconoclast: How to Find Happiness in an Unhappy World 
Using Epicurian philosophy.
http://www.rationality.net/Epicurus and Epicurean Philosophy 
Offers ancient texts, history, bibliography, related links, and e-mail discussion group.
http://www.epicurus.net/
The Philosophy Garden 
A society for Epicurian enthusiasts.
http://www.atomic-swerve.net/tpg
Lucretius and Epicureanism 
Original and translated texts of Lucretius and Epicurus. General background information and commentary on Epicureanism.
http://www.vroma.org/~abarker/lucretius.html