You will need an Adobe ID and Adobe Digital Editions software to read Adobe (DRM) files. The Adobe ID is free to obtain, and, Adobe Digital Editions is a FREE download. Everything you need to know and downloads are available here:
Most digital ebooks contain digital rights management (DRM) protection which prevents the ebook (s) from being shared with others. Adobe Digital Editions helps ensure that your eBooks and other digital publications are not "locked" on one computer. They are assigned to you through an ID, and can be viewed on any compatible device you own that you activate with that ID.
To obtain an Adobe ID you need only provide a name, country, and e-mail address. You can also create your Adobe ID when prompted within Adobe Digital Editions, or go directly to the Adobe.com site, select “My Adobe” in the top-right corner, then click on “My Adobe ID” and follow the instructions for creating an Adobe ID.
Be sure to authorize your Adobe ID it before you buy any ebooks, and make sure to always use the same Adobe ID when dealing with any ebooks or e-reading devices. That will protect you from 95% of all problems and error messages, and provide a stress-free ebook reading experience.
Happy Reading from the eBookPie Team