Fixed Layout ePub: Exclusive Bonus When you purchase a copy of Principles of Practical Natal Astrology from this site, you also receive an exclusive digital edition of the book, not availalable anywhere else. The fixed layout ePub gives you virtually the same experience reading the digital edition as you get reading the printed book. You will need a tablet (iOS or Android) to view the fixed layout ePub. On the iPad, transfer the file and open it in iBooks. If you're on an Android tablet, you'll need to download a free copy of the Kobo Reader app for the file to display correctly. It's possible to view it using Google Play Books, but not all of the type will display correctly.