What are the primary jobs of a book cover? Does a cover need to portray different things on a printed book and a digital one? Should your cover be innovative and different than the other covers in your genre so people notice it? With so many people buying and reading books on small mobile devices, does the way a cover show up matter? I saw the perfect photo on the internet for my book cover, can I use it? Since it saves a lot of money, should I make my own cover? What makes a really bad cover? What makes a really good cover?