One of the most popular was Best practices in ePub cover images, which helped clarify how to include a cover image for most ebook readers. (safaribooksonline.com)
The average time you're looking at for most ebooks with a range of 20,000 to 90,000 words, is going to be 4 - 12 weeks. (toughnickel.com)
There are already over a million ebooks available in most ebook stores. (dealsagar.com)