To transfer books from computer to iPad you must have books in ePub file format and available on your PC or Mac. If you have some books in PDF file format and want to convert into ePub file then first see how to convert PDF to ePubs. Lets see how to transfer DRM-free ebooks to iPad for reading in iBooks.
How to transfer ebooks to iPad
Click on File menu and select “Add to Library…”
Select ebook (.ePub) file from computer that you want to transfer and click Choose button
On the left side under Library section, click on Books. Your books will be listed on the right side.
Connect your iPad with computer and after few seconds your device will be listed under Devices section on the left side, select your device (iPad)
Select the Books tab on the top
Check the “Sync Books” checkbox and you can Sync all the books by selecting the “All books” option or few selected book by selecting the “Selected books” option
Finally click on Sync or Apply button