If you don't want to carry around a library, get an e-reader. I, admittedly, arrived pretty late to the Kindle game, but I've been using my roommates Kindle Oasis and I am now sold. Read classics that are in the public domain for free, or hit up your daily newspaper or that best seller you've been hearing about for months. The Kindle Oasis has 12 LEDs, an adaptive front light, and a battery that will last up to six weeks on a single charge. Nothing beats the feeling of flipping through the pages of a real book, but this comes pretty close. You can also listen to their extensive library of Audible audiobooks.