Outline of Paradise Lost -- Book Three
Lines 1-55 The Invocation of the Muse 56-79 The Scene in Heaven (Lots of references to light, seeing)

80-134 The Father's speech -- God justifies Himself

135-166 Son's address 167-216 Father's speech on Man's fate 217-65 Father calls for a volunteer 266-343 God's acceptance of Son as Savior 344-417 Angels praise Father and Son 418-497 Satan's travels through the world's outermost orb Inhabited by vain fame-seekers

Dwellers include builders of Babel, embryos, idiots, friars, etc.
 

Dore etching of Paradise of Fools.
 
Criticism of Catholics
498-587 Gate of Heaven 588-742 Satan approaches Orb of the Sun Satan first alights on earth on Mt. Niphates
Book One Book Four Book Seven Book Ten
Book Two Book Five Book Eight Book Eleven
Book Three Book Six Book Nine Book Twelve