The Courage To Soar by Simone Biles book review! Overall I would give this book a rating of four out of five stars, and this book fits into the genre non-fiction. The most important characters in this book are, of course, Simone Biles, Adria BIles (Sister), Aimee Boorman (Coach), Nellie & Ronald Biles (Parents/Grandparents). I think this book went by a little slowly. Some of the most important events were very undetailed. Then, there would be about a sentence of suspense, and draws you in, and then go back to being slow.