Encyclopedia Mythica
Encyclopedia Mythica: Greek People (Mythological)
Featuring the heroes, heroines, and mythical creatures from Greek legend, this site offers information on hundreds of characters, as well as etymology, pronunciation, pictures, and more.
Wikimedia
Wikipedia: Oracle
This article explains what an oracle is and discusses some of the prominent oracles in classical Greece, primarily the one at the temple of Apollo in Delphi. Links are also provided for additional information.