I am Kartik. (13-09-2009) I am an 11 years old coder. Speaking about this book, I want to say that I have written this book to nurture young minds interested in coding like me to move forward in their world of IT Development, like developing apps, games, and websites. Please go through every page thoroughly and learn to code, to remember it forever. I have given the idea of almost all programming languages but mainly focused on blockchain development in this book.