Digital Publishing on Windows - The EPUB Book Format

The EPUB format is an XML based e-book format. The current version is as of 31 December 2016 is 3.01 and is copyrighted by the International Digital Publishing Forum or IDPF, a standards organization for digital publishing. A relevant conference discussing EPUB is Digital Book World.

Reading Ebooks using Adobe Digital Editions

Adobe, the people that brought you PDF files, now has a product called Digital Editions which allows you to read e-books stored in .acsm format. It also supports PDF/A and EPUB formats (EPUB is developed by IDPF).