As an employee within BP and having met Lord Browne on several occasions, I found his book to be very educational and insightful. Understanding his rise to the top of the company, and the challenges he faced along the way, provide great context to what it takes to be a leader. He certainly was a man at the centre of each of BP's major steps forward to become the global success that it is today. However the book also touches on his personal turmoils and the influence of family and his own sexuality, and how each shaped his ascent and ultimately descent from the top of the UK's largest company (on market cap).
If you're interested in the oil industry, in BP, or in a personal insight to a man's views on the history and future of this vast global industry that touches everyone in some shape or form, I'd recommend you read this book.