There have been so many books written to explain the foundamentals of bitching and it functions and other digital currency which are in it classes as other cryptocurrency. People have also written so many online journals and article about cryptocurrency and what it entail.
That is what we use to hear that there is many articles of cryptoccurrency, which is real but we are emphasising on approved text book of bitcoin which someone can purchase and read in order to understand the basic concept of bitcoin, OK, if there is existing bitcoin manuel texts book except Google and YouTube's video were can people purchase it, and who is the author,tittle, of the book to showcase
That bitcoin text book is in existence.