I believe this was the first book released for Starfinder Second Edition. As such it had to serve as an introduction to the system as well as what had changed in the solar system since the first edition. Unlike many TTRPG companies, Paizo likes to advance the story of the world and change things up as time goes on.

However, the best part of the way this book is organized is that the first few chapters are based on the types of campaigns you might run - horror, science fiction, fantasy, weird, and so on. For each type of campaign, the writer suggests planets the GM might go to and some campaign starters whether it’s for a one-shot or a long campaign. Just this section alone is worth getting this book.