You have access to the Constellation bookshelf as long as you are an active student. Prior to graduation you will be prompted to save your materials to your hard drive.
Also, after sixty from your last date of attendance your materials will no longer be available. Please download them to your computer for future reference.
.MOBI files are available for reading on a standard Kindle eReading device.
PDFs are available for most tablets and computers.
ePub files are available for the Barnes and Noble Nook, and other select eReaders.