Starting next Wednesday, February 26th, Amazon isn’t going to let users download the ebooks they’ve purchased, forcing users to keep everything within the corporation’s proprietary ecosystem.…
First, you will need DeDRM v10.0.9 beta/RC or the alpha release. This will work on many (but not all) Kindle ebooks. (Some Kindle books come with extra-strength encryption that these tools cannot handle, etc.) If you have questions about installing, setting up, or using DeDRM, ask on GitHub.