Friesian School
Friesian: Baruch Spinoza by Kelley L. Ross
Contains biographical information, and an excellent overview of key philosophical themes and ideas. Also traces Spinoza's influence on modern philosophy and later.
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.
Internet Encyclopedia of Philosophy
Internet Encyclopedia of Philosophy: Neoplatonism
Good introduction from the Internet Encyclopedia of Philosophy to the history of the Neoplatonic vein of ancient Greek philosophy. Includes information on Porphyry, Jamblichus, and the Athenian school. Not a substantial treatment of...