Can I Transfer this e-book to iBooks?

Unfortunately, you cannot read Glose e-books on iBooks at this point. But if you have an iOS phone/tablet, you can install Glose’s native apps and read on this device by visiting this link on your device: https://itunes.apple.com/us/app/glose-social-e-book-reader/id896681871?mt=8

Any book you open on your phone or tablet will stay available for offline reading in the application.