1. Log in to Apple official website to download itunes, install it and open it.
2. Click "Menu" at the top of the interface and choose to add files to the repository.
3. Click "Books" and you can see that the added books are in the project:
4. Connect the equipment to the computer with a data cable; Then click the Books tab and select Synchronize Books:
Wait for the synchronization to end.
5. Run the reader "ibooks" and select the e-book file. At this time, you can find synchronized e-books in the list, and you can see them when you open them.