Here's the overview of chapter 20.There are four different scenes covered:

(vv.1-3) Satan Bound for 1,000 years
(vv.4-6) 1st & 2nd Resurrection (some to life & some to death)
(vv.7-10) Satan loosed & then cast into the lake of fire
(vv.11-15) The Great White Throne Judgment

Let’s dive into each one of these for some general understanding. These topics could be explored for an entire series, but that’s NOT the intent of our study. Our aim is to capture the big understanding of the book so we’re NOT ignorant of God’s overall plan.