Didn't Understand Westworld's Season 3 Premiere? Here's What You Need to Remember

Our intrepid heroine makes it to the Forge and reads guest data, something Bernard (Jeffrey Wright) wanted her to do in order to gain a "competitive advantage" out in the real world. He put her pearl inside a host version of Charlotte Hale (Tessa Thompson) to keep Dolores safe. Then after they flood the Forge, Dolores escapes Westworld in a new body with five other pearls in her bag. In the outside world, she rebuilds her Dolores body in Arnold's home, plus a new Bernard made out of her memories of him. She also places one of the stolen pearls inside the Hale host body Dolores used to escape.