I just finished Intro to Religion. I studied using only Instacert, Dantes practice test and the multiple choice questions from Experiencing the World's Religions*|*Learning Objectives. I passed with a 63.
Know the four noble truths, how Islam spread, how Buddism and Confucism are similar, who is Lao Tzu, Charmalgne, five pillars of Islam, which gospels focuses on the birth of Jesus, books that make up the Five Classics. I thought it was pretty easy.