Internet Encyclopedia of Philosophy
Internet Encyclopedia of Philosophy: Aristotle
Detailed introduction to the life and philosophy of Aristotle. Includes helpful outline of his system and an excellent chart comparing his virtues. A great place to start.
Internet Encyclopedia of Philosophy
Internet Encyclopedia of Philosophy: Greek Philosophy
Introduction from the Internet Encyclopedia of Philosophy to the main topics and thinkers in the Greek philosophical tradition. Includes links to related articles. Helpful for relating particular philosophers to each other chronologically.