3 Secrets to e-Book Cover Design Success including keeping your cover simple, make sure it works small, and performs a strategic function.
designing book covers
Book Cover Design, Fiction and Nonfiction: What’s the Offer? looks at the different motivations involved in designing nonfiction and fiction book covers
Lessons From a Do-It-Yourself Book Cover Designer by Will Entrekin, how he designed the covers for his first three books, and got an education along the way