Best path: play Chapter 1, then continue with the free reading preview at Chapter 1. When Chapter 7 ends, the next step is the full book.
You've heard the free chapters.
Chapter 8 is where the story turns. The full book continues with 32 more chapters, the Bridge, Final Reflection, and the appendices that complete the Four Colors framework.
Chapters 8-39, Bridge, Final Reflection, and appendicesIn the full book