Being an Iron Maiden and heavy metal fan, I had to pick this up. “What does this button do-” explores in depth the life of Bruce Dickinson from his early childhood and upbringing right through to present day. The book is easy to read and offers great, often funny stories about the antics of life with fame as well as the ugly. Bruce goes into detail about his life outside of Maiden and how he came to be a fencer, a pilot, a heavy metal god and dealing with cancer. What the book does not contain (which may disappoint some fans) is an in-depth discussion on each Iron Maiden album and nor should it. Instead, Bruce explains some of the meaning behind certain songs or a few tales from each tour through the decades. “What does this button do-” is an intriguing autobiography of a heavy metal great and fans of Bruce or Iron Maiden should pick this up if they want to know a bit more of him and a glimpse into the history of Iron Maiden. 9/10.