Associations, Synagogues, and Congregations: Companion to book by Philip A. Harland: illustrated survey of social and religious life in Roman Asia Minor.
Sacred-Texts: Classical Paganism: Translations of Greek and Roman texts.
Wikipedia: Mesopotamian Mythology: An article with an overview of deities and cosmology.
Wikipedia: Mesopotamian Religion: An overview that includes the impact of Hammurabi, the cult of Anu, the triads, and a chronology.