Deity

Helpful resouces:

Pantheon Index: http://www.web.raex.com/~obsidian/PanIndex.html
Godchecker: http://www.godchecker.com/pantheon/index.php
Encyclopedia Mythica: http://www.pantheon.org

Read Mythology by Edith Hamilton (This is strictly Greek and Roman)
Read The Goddess Path by Patricia Monoghan