Table of Contents of a book titled "Mythology Unbound: An Online Textbook for Classical Mythology" by Jessica Mellenthin and Susan O. Shapiro:

Aegis
Agamemnon and Iphigenia
Aphrodite
Apollo
Ares
The Argonauts
Artemis
Athena
Caduceus
Centaurs
Chthonian Deities
The Delphic Oracle
Demeter
Dionysus/Bacchus
Hades
Hephaestus
Hera
Heracles
Hermes
Hestia
Historical Myths
The Iliad - An Introduction
Jason
Miasma
The Minotaur
The Odyssey - An Introduction
The Oresteia - An Introduction
Origins
Orpheus
Persephone
Perseus
Poseidon
Prometheus
Psychological Myths
Sphinx
Story Pattern of the Greek Hero
Theseus
The Three Types of Myth
The Twelve Labors of Heracles
What is a myth?
Why are there so many versions of Greek myths?
Xenia
Zeus

Mythology Unbound: An Online Textbook for Classical Mythology