Cut to the Chase, Please

How are Postmillennialism and Partial Preterism different? How does Optimistic Amillennism that Earl subscribes to relate to this study? Or is Earl Eclectic or Ambivalent Eclectic? Maybe the answer is in an earlier posting, but at this point can we cut to the chase, simplify, give our “aha” moments in the pursuit of this topic? What is learned from each of the men that you, Bill and Earl, quote? Kindly give me the “aha”. Thanks.