Christian Nonfiction Review: 50 Things You Need to Know About Heaven
Dr. John Hart starts with the basics in his book "50 Things You Need to Know About Heaven." As he advances, I suppose you could consider his questions and answers a crash course. If you want something more detailed, there's always Randy Alcorn. Hart comes from a strong, clear Orthodox Christian perspective and aims to make Heaven look less boring and more fulfilling (here, I really got a lot from his perspective on sex and relationships in Heaven). There weren't too many new revelations for me, but I still found this an interesting read. And I appreciated that the questions were well organized and seemed to flow one from another. Hart also offers Scripture verses and passages for further study.
*Disclaimer: I received this book for free in exchange for my honest review.