I stopped using Amazon a while back, but it was where I got all my books for a long time. I do thriftbooks mostly now, and try to buy directly from publishers when it’s a newer book, but I’m always interested in finding new spots to cop some sweet books.
I use Calibre to load pirated books onto my Kindle, but I’ve been debating a Kobo for a while now.
Honestly, I couldn't figure out how to do it with Calibre. I still use that for keeping my stuff organized tho. Calibre is legit, especially if you get into data hording territory.
Calibre is god tier software for sharing online try out Bookwyrm