Hi, I am curious if you might consider publishing directly to the stores (Kindle) as a free book (or $0.99). It would make it easier for people to access. I am an engineer but failed to try and get a kindle book downloaded and read last night after seeing your post. So I imagine your work is out of grasp to all but the most technical who have a computer handy. I was 100% on my phone (no computer to upload), and I just couldn't figure it out and gave up. I would support you over other publishers.
Kindle is one of the worst reading platforms and it looks like this kind of difficulty is one more reason why. If you're on your phone, try using almost any other ereading app and download our epub files instead.
Amazon expressly forbids any more free public domain ebooks on their platform. But our ebooks are available at the Google Play store and in the Apple store, for free.
Not sure, but even if Amazon allowed more free public domain books, it wouldn't make much sense to post there because their store is so saturated with low-quality junk editions. There isn't much point in being on the 20th page of search results for "Pride and Prejudice".
Without a desktop intermediary your best bet is to email the file to your kindle from your phone. By default kindles have a random generated email address. You can customize the email address to something memorable in your kindle settings (and also in Amazon's Devices settings web pages) or just add the random generated address to your contact list.
There's a bunch of tutorials on it you can find that try to make it easy to figure out where these settings pages are. But of course Amazon likes to move that cheese every few months and A/B test "improvements" to the pages and page designs so tutorials also get outdated quickly.
