The book "How I Became a Billionaire" is Rockefeller's autobiography. Here, he appears for the first time as the author of an essay series. The stories are written in Rockefeller's tough but cautious style and shed light on the practical as well as small episodes of his life. The businessman presents the relationships he had with interesting people in the business sphere at the time, it allows getting acquainted with the character of the author and his opinion on this or that issue.