OC Let's talk about defenses to the King's Gambit

If you play 1... e5, you've run into the King's Gambit at some point. And if you're anything like me, the positions make absolutely no sense once you get about 5 moves in. So let's talk about it. What defense do you play against the King's Gambit? What are the main ideas for black? How do you survive when White is throwing...