A PDF is a suitable file format for creating and reading e-books. However, if you want to open an e-book in most e-readers, like the Amazon Kindle and B&N Nook, you must first convert it to an EPUB.
Calibre 8.0.1 brings improved Kobo support including EPUB to KEPUB conversion when transferring. Also includes the capability to treat folders as USB mass storage, which is beneficial for Chromebook ...
The fact is, ebooks are still going through a lot of growing pains, which often leaves ebook early adopters like you in the lurch. As the always excellent Matt Buchanan over at Gizmodo explained, the ...