The phrase "to win this book" means that you can get the book as a prize or reward if you are successful in some kind of competition or contest. Full definition
She is the author of 4 novels, 5 books of poems and more than 20 award winning books for children. (bookbrowse.com)
In the opening article of his series he talks about the research and data collection methods he uses to write his award - winning books of non fiction. (authorhouse.net)
I've spent a long career as an award - winning book designer with, I believe (this is an estimate), over 20,000 books published based on my designs. (thebookdesigner.com)