I bought this book in preparation for launching my own in December 2013, and found it incredibly useful. In particular, the sections on categories, price pulsing, going free and the difference between best seller and popularity lists. I recommend it if you are a first time author about to embark on publishing.
This is the first time I've read a Barton novel and I will be going back to read some of her previous work now. I thought it was excellent - well written, full of suspense and enough red herrings to keep me guessing. The relationship between JD and Audrey was fabulous and I hope there are sequels to this book.