I will start by congratulating you on the success you have achieved in putting this material together. I know what it takes to work on things of this nature when it comes to academics or something that involves research, the compilation of different materials, and writing to achieve the goal of publishing a book. I must say that you have gone a long way in putting things together for the sake of the bitcoin community, especially the newbies to having a material of this nature. As you have said, this would be a very good legacy you have left here, and the community would forever be happy about what you have done. This book would serve as enlightenment material which would educate bitcoin enthusiasts more about bitcoin and its inception, the founders, and how they began the bitcoin journey into the world. It is remarkable that a book of this nature has finally emerged.
Congratulations once more.