1. Connect the IPAD to the computer, open itunes, find the kindle program (installed), and drag the books in mobi/pdf/txt/asw/asw3 to the kindle icon to import them automatically. For others, such as importing other videos, just drag the file to the corresponding player icon. This drag is dragged with a mouse, and it is operated on a computer, not on an IPAD.

2. I have a kindle and am going to give up the kindle plan because there are not many supported formats. I suggest you install more, which is very easy to use, and of course ibooks is also very good. It's just that the PDF rearrangement function is very powerful, and all kinds of reading progress can be synchronized. Look at the built-in book mall. The typesetting is very good. Download a few free books to know their sincerity.