Hi, yoshiko6629!
Unfortunately, I’m a Linux and Windows guy, so I wrote this tutorial only for Win 10: https://www.lingq.com/pt/community/forum/open-forum/detailed-instructions-on-how-t
- But, if you’re tech savyy, you can run Win / Win software on a Mac. See: https://www.howtogeek.com/187359/5-ways-to-run-windows-software-on-a-mac/
- Or ask someone you know if you can use his / her Win computer. Then just install Kindle version 1.17 for Win on his / her computer, download all your Kindle books to an USB stick and convert them at home with Calibre.
Good luck
Peter