Reading 1???

I like how Milton opens up the book.  He starts the story with a great dramatic opening of Satan getting banished from Heaven, and him vowing revenge.  Maybe I read a little to far ahead, but I feel like if I were writing a movie, it would be about the war between God and Satan in which Satan is defeated.  Then as Satan lies there defeated, he rises up to vow vengeance on God in a never ending eternal war, setting up the ending for a sequel.  I suppose what I am saying is that the opening tells of even some more back story, and baits the audience with more to come.