Wikimedia
Wikipedia: Mithraic Mysteries
Wikipedia provides information on Mithraism, a secret mystery religion of the Roman Empire.
Other
American Studies Today: Religious Cults in Twentieth Century America
This article--written after the Branch Davidian incident in Waco, Texas--details the revived interest in American religious cults. The author defines "cult," looks at the anti-cult movement, and provides suggested readings.
Other
The Cosmic Mysteries of Mithra
This is an excerpt from a book dealing with the mystery cults that existed in ancient Rome, especially the cult of Mithra. Great information coupled with interesting pictures makes this site a must-visit.
Internet History Sourcebooks Project
Fordham University: Ancient History Sourcebook: The Worship of Cybele
This site from Fordham University contains a description of the Cult of Cybele by the Epicurean poet Lucretius.
Other
The Days of Genesis 1
You must scroll down to the section titled "The Early Church and the Day-Age Theory" to begin specific reading on St. Augustine's interpretation of Genesis 1; however, the information leading up to it is valuable as well. Provides...
Exploring Ancient World Cultures
Exploring Ancient World Cultures: Mithraism
University of Evansville provides an article written by Alison Griffith that defines Mithraism. Though it does not relate any startling information, it is a wonderful site for those searching for a clear definition of Mithraism. Fairly...
Art Institute of Chicago
Art Institute of Chicago: Taoism and the Arts of China
Chinese art is often used to depict the religion of Taoism. In addition to many images, there are also lesson plans for all ages.
TED Talks
Ted: Ted Ed: Why Do People Join Cults?
Janja Lalich describes how cults recruit and manipulate their members.
Other
International Society for Krishna Consciousness
This site includes useful information on the history of Hare Krishna and its major doctrine.