I cannot provide a complete review, even after taking the class. However, the book must be read understanding historical events that occurred prior to its writing, symbolism, and a deep knowledge of the Old Testament.
It is worth a study, as long as it is led by an expert in the things mentioned. In my case Jeff Cavins provided via video the expertise, and the priest was scholarly enough to provide answers to questions. The textbook provided lists of meanings of such things as numbers and colors, as understood by the people of the time. Indeed, if a number means complete, that is what is being conveyed, not necessarily the literal number. The colors of the horsemen also have meaning.
While the end of the world is mentioned. It is far from the focus of Revelations. Instead, if properly studied, God reveals, hence the name, Himself to us. It is an incomplete understanding of God’s nature, but in my case much deeper an understanding than before the study. The joyous experience of better understanding God runs through the book. Yes, evil will be punished in the end, but the real focus is on those attaining Heaven.
In the end the group voted on Psalms for the fall. I am back at work, so I will have to pass. If you get a chance to study such a course, I strongly recommend it.