Some of the most dominant themes in today's end time prophecies got going with Hal Lindsey's "The Late Great Planet Earth", which is about 30 years old, widely available in public libraries, and an easy read. Plus, because it is thirty years old, it has the advantage of already being wrong on some details, which makes it more fun to read. Despite the errors, today's Rapture believers have retained basically all the prophecies of that book, just updated with new antichrists and the like.
(The Soviet Union was very obviously the nation that would invade Israel to bring about the battle of Armageddon, according to Lindsey.)
Oddly enough, the best source of information I found on the "end time prophecies" from the book of revelation was none other than the footnotes in my Bible, a Catholic version.
There, it said that the "end time prophecies" were best seen as present time prophecies. They were an apocalyptic description of the persecution of Christians that was happening at the time the book was written, under the emperor Diocletian. (Or was it Nero. I forget.) Whoever it was, the number of his name, when spelled in Hebrew, added up to 666.