The first book, the paperback version, which didn’t have QR codes was very disappointing. I had to buy the PDF version so I could open the videos. Putting QR codes in this book was genius. It’s so easy to follow everything. The book is very long with lots of information. I learned so much. I’m a beginner, who has taken lessons, and some of the tips were things that I had not heard before and were fairly easy to start using in games.