Reference Librarian, Ted Nesbit, from West Liberty University in Ohio highly recommends this website developed and maintained by an Australian Ancient Greek enthusiast, Aaron J. Atsma.
Michigan State University library lists this website in their "Classical Studies Online Guide"
"The “Theoi Project” is maintained by Aaron J. Atsma, an Australian who has amassed an extremely comprehensive collection devoted to the mythology of ancient Greece. There are more than 1,500 pages of text and over 1,200 full-sized images. The collection is thematically arranged, and there is a search box in the upper left corner of the home page. References to primary sources are given and are extensively quoted. This project is one of the best online sources for Greek mythology."