Books My Booklist What I know for Sure by: Oprah Winfrey This incredible book by one of the most influential women of all time - Oprah Winfrey - sums up some of the most important things she has learned throughout her life. Which it turns out, not surprisingly, is a whole lot. Check it out! Blockchain Revolution By: Don & Alex Tapscott This book is a fantastic introduction to Blockchain technology, the groundbreaking technology behind the digital currency - Bitcoin. Check it out!