This is just a selection of encyclopedias & dictionaries on mythology that will get you started. They can be found in the Reference Dept. on the main level of the Library:
Dictionary of Hindu lore and legend
by
Anna L. Dallapiccola.
Encyclopedia of Jewish myth, magic and mysticism
by
Geoffrey W. Dennis.
Facts on File encyclopedia of world mythology and legend. 2d ed.
by
Anthony S. Mercatante ; revised by James R. Dow.
Oxford companion to world mythology
by
David Leeming
The Library has many books on mythology from around the world. These are just a few:
Intoxication in mythology : a worldwide dictionary of gods, rites, intoxicants and places
by
Ernest L. Abel.
Kinship myth in ancient Greece
by
Lee E. Patterson.
Oxford handbook of the Bronze Age Aegean (ca. 3000-1000 BC)
Cliffs notes on mythology
by
James Weigel
Classical mythology : a very short introduction
by
Helen Morales