This series assumes some familiarity with the book of Revelation and a few other references. It is a notoriously difficult book to study.

Basically, Revelation is the completion of all Bible prophecy, and details the last of God's dealings with Israel as a nation. It includes the judgment of God against all mankind, who have rebelled against him repeatedly. It is therefore both a warning and a great hope: to unbelievers, a powerful incentive to repent before it's too late; for believers, the anticipation of the end of all war and suffering and death.

Beyond that, is there anything specific you need cleared up?