You can download "Adobe Digital Editions" on ipad from App store.
For transferring books to ipad, you can try either of two things:
- Email your book and download it on your ipad, only make sure authorization credentials is same on your ipad
-Connect your ipad to your machine
-Scroll below to File Sharing
-Then select ADE
-Click on Add and select the file that you want to transfer
now, open ADE app on ipad, tap on leftmost button (3 line), and select refresh.
Your book will appear in ADE on ipad.
only make sure authorization credentials is same on your ipad