Paper books are great, sure, but they're so 20th century. If you've yet to try reading on a tablet (or, if you must, a smartphone), it's time. And Google has you covered with Google Play Books.
There's not much that's surprising here. Google has a store for books. And it gives you an app on which to read them. (Or, if you prefer, you can read in a web browser.) And you get all the bells and whistles you'd expect. New York Times Bestsellers. Textbooks. And, for some classics, you get them for free. You can read offline, adjust font size and switch from day to night mode. Or, if you want, you can upload your own PDFs or EPUB files to your library. You can take notes, bookmark your position — and it's all synced across your devices, through your Google account.