I purchased a Kindle book called the musical magic by Richard and Robert Sherman. It is a picture book with text as well. But, I don't see any way to back out of this book and get back to the list of library books I have purchased from Kindle. the back button is dimmed. I'm guessing its a problem with the inaccessibility of this book. I'm using the latest Kindle version with iOS 10 and an iPhone 6s. Does anyone have suggestions? I can wait for a sighted person to visit and then have him get me out of it but, I'd rather do it my self. Thanks!