This book is a piece of art. All the time you keep thinking how do they to sell this. All the pages are in Hi definition color. I think the book succeeds in content quality as well as presentation. The step by step approach with diagrams, checklists and todo’s help you learn and implement things right away. This book comes from a company that is dedicated to helping start-ups. I think I fell in love with this book the moment I got it in my hands.