eBook Self-Publishing: A Simple Guideline and Some Tips on Taking Those First Steps

"2. Study the style books for each style and format for each retailer you are publishing with. The more complex your ebook, the more you need to study the style sheets. TIP: Do this in advance before finalizing your content for each format. It will save you a lot of time in the long run"

http://www.selfpublishingreview.com/blog/2011/06/16/ebook-self-publishing-a-simple-guideline-and-some-tips-on-taking-those-first-steps/