There are two types of e-books available to writers. The PDF reader opens files on a home computer. The digital versions use a hand-held reader to open the files. The Palmpilot, Adobe PDF reader, Mobipocket, and MS reader are the industry standards.
Authors need to consider the e-book markets before creating an e-book. Is the e-book to be sold through an e-book distributor, or from a private website? Ingrams, the nation's largest book distributor, will only accept e-books in the Palmpilot version. The three largest e-book stores, fictionwise.com, Amazon.com, and ebook.com will only sell an e-book if it includes a mobipocki version. E-books sold from a private website need to include an Adobe PDF version.