
Because it's an e-book, the authors have links to their blog for more in-depth reading. At the end of each chapter there are assignments that you can do and they encourage you to share your "homework assignments" on their forum. I enjoyed reading this book. It clarified alot about basic photography that I had learned taking a class here and there but never really grasped.
I would highly recommend checking out the website and blog for helpful dSLR tips as well as tips on how to improve your photography.