Mythology is the study of myths, being the symbolic or allegoric stories of a civilization that are meant to explain (in a non-scientific way) why things are the way they are. Myths, in other words, function as the combination of a cosmogony and a theology within a given society.
In the exopaedia, at present, you will find information on:
Roman mythology is a subject too, even though it is mostly a copy of Greek Mythology.
It is interesting to note that Hindu mythology, as well as the Greek, Hittite, Hurrian, Assyrian and Babylonian mythology, all tell stories that are copies of stories of Sumerian mythology. Even a lot of stories in the Old Testament are copies of Sumerian stories.
Future links: German mythology; Indian (Hindu) mythology.