Apple Books supports e-books in PDF and EPUB formats. Just open the e-book through the book App and wait for iCloud to synchronize, so you can read books synchronously on iPhone, iPad and Mac. Of course, you can also share the webpages you saw in Safari with books, and save the contents of webpages in PDF format, so that you can look them up and take notes at any time.

There are many English books in the American iBook and many cartoons in Japan.