My DD is a librarian in a major city. She helped start their online book system and has taught librarians and hundreds patrons how to use many different devices. She's also owned Nook, iPad, Kindle, etc. Her favorite by far is her Kindle Paperwhite ereader. It needs to be charged once a month or less (she reads daily) and she can easily read in the sun on the beach plus it doesn't keep her DH awake or hurt her eyes. It's so inexpensive and easy to read and download book. I've given them to relatives in Korea, Italy, and New Zealand. Amazon has it's own free wifi that works all over the world.