The eBook format you choose must be compatible with your computer, handheld device, or eReader operating system, and the reader software you use.

Reader Apps Compatible with iPhone^®, iPad^®, and iPod^®touch

iBooks  - Is a free app compatible with iPhone^®, iPad^®, and iPod^®touch that supports both PDF and ePub formats. 

Adobe Digital Editions - Is a free app compatible with iPad^® that supports both PDF and ePub formats. 

Bluefire Reader - Is a free app compatible with iPhone^®, iPad^®, and iPod^®touch that supports both PDF and ePub formats. 

Reader Apps Compatible with Android

Aldiko - Is a free app compatible with and Android device that supports both PDF and ePub formats. 

Bluefire Reader - Is a free app compatible with an Android device that supports both PDF and ePub formats. 

eBook Formats

PDF - Is readable offline on computers and handheld devices using Adobe Reader (download for free).  PDF can also be read by many web browsers with Adobe add-ins.

ePUB and PDF - Are readable on computers and handheld devices using Adobe Digital Editions, Bluefire Reader, iBooks or Aldiko.

MobiPocket - Is readable offline on computers using Kindle Previewer or on an iPad using the Kindle app. The MobiPocket file can also be loaded onto your Kindle device.

Offline content may also be read using any eReader compatible device, see eReader Device Hardware Guide.