It’s almost hard to remember, but when it came out, iBooks could read only EPUB files, not PDFs, and the only way to load them was by syncing with iTunes. Over a number of releases of both iBooks and ...

How to add EPUB, MOBI, and PDF files to your Kindle - follow my easy step-by-step ...

Google Play Books has a little known feature that allows users to upload their own PDF and EPUB books from their PC or Android device to their Play account. This makes Play Books a fairly good little ...