Got my girl a kubo because I heard they were better than the kindle, and fuck Amazon anyways. But the book pickings have been slim, and the library integration isn’t adding much.
I’d like to add to her selection without making it more difficult
Edit: oops, kobo
Assuming you mean Koboassuming you mean Kobo, Grimmory has a good system. I haven’t found a good way to automatically get books though, so typically I browse Anna’s Archive or Z-Library
I find shelfmark to be pretty good.