The exercises are grouped per chapter in the book.
Each chapter starts with 'starters'. The starters are focused exercises to get familiar with the new material.
After the starters we will work on a small project to apply the new stuff in a fun context.
The instructions for each chapter start in the test for the starters for that chapter. For example, the instructions for chapter 2 start in StartersChapter2Test. This instructions are written as comments in the tests.
When the tasks in a test are done, then the instructions will 'jump' to the next test. For example, at the end of StartsChapter2Test, the instructions jump to ClockControllerTest where the project will start.
Start with StartersChapter2Test and follow the instructions in the test.
All these pretty bytes are protected by copyright. Normally you are not allowed to change or redistribute all of this stuff. Luckily added a file LICENSE which states that you can do more or less whatever you want. See the file for details. Long live free open source.