Download Episode 9, it contains Chapters 1-9. Start a new game. At one point, there will be an option to choose between Jessica or Skylar. At this point create a save for both, and label them as such. There is A LOT more content with Skylar, so for your 1st play-through, I'd choose her. There is now new content that involves Jessica in Chapter 9, but it's worth choosing Skylar.