Book 4 of Paradise Lost records a momentous point in the story. Here is the place we listen to Satan speak honestly about his feelings and situation for the first and last time. This is the book where we finally meet Adam and Eve and see their beautiful home in Paradise. The action is picking up and there are many things to explore in this part of the story.
For references and helps in today's episode the following books were consulted:
The Biblically Annotated Edition
Milton's Paradise Lost by Ryken
The Myth Made Fact