The chapters are structured so you are building 2 projects at once. One where you follow along with the chapter material with example code and explanations. And a second in the exercises.
I really like it because it introduces the concepts in the context of a project, but you can't get stuck because the code is there too. Then you need to really apply it in the exercises on your own project, without the example code.
Its a great resource, but not for total beginners, however if you know basics of html, css and javascript this is hands-down one of the best resources out there.
The chapters are structured so you are building 2 projects at once. One where you follow along with the chapter material with example code and explanations. And a second in the exercises.
I really like it because it introduces the concepts in the context of a project, but you can't get stuck because the code is there too. Then you need to really apply it in the exercises on your own project, without the example code.