>>912892there's supposed to be a way using the ebook manager Calibre, but it involves adding things to it and doing a lot of fiddling. i never got it to work, and i just look for a non-DRM version of the book, if it exists.
Amazon's attitude toward the books that you buy from them is... "When an Amazon Prime Video user buys content on the platform, what they're really paying for is a limited license for "on-demand viewing over an indefinite period of time" and they're warned of that in the company's terms of use. That's the company's argument for why a lawsuit over hypothetical future deletions of content should be dismissed."
you don't own it. you pay for it and if you're lucky, they'll let you see it. i sound a little bitter because i've paid for books on the kindle app and then had them disappear when i had to move to a new device.