There's a certain category of people who prefer to read on paper. Especially difficult topics, or new subjects. I still remember the dot-com media boom -- bookstore shelves lined with guides to the Internet, inch-thick technology magazines -- what a great time to be a tech writer!
Then there's folks who prefer ebooks. I've recently become the second type of person. I still check out library books, or pick up print books by my favorite authors, and buy reference books, but the majority of my reading is now on an e-reader. I have a subscription to Oyster, and I use my library's OverDrive system as well (and I recommend both). Given the choice between learning a subject by reading a book about it, or a bunch of different blog posts, I like to start with a book. It's more organized, and I'll be sure of not missing critical parts. Once I've got this base of knowledge, I subscribe to relevant blogs to stay up-to-date, and build on that foundation.