For those who first opened their ibooks app and found 10 dollar to 15 dollar books, there is a staggering and vast treasure trove of free works, such as encyclopedia & dictionary works (One book had over 4 THOUSAND PAGES), classic histories, e.g. Lincoln's own writings, historian treatment on Washington, 'The Works of Xenophon' (2538 pages.), classic literature: Emily Bronte, Mark Twain, Jane Austin, etc. It's not obvious they're out there. If interested, search 'gutenberg' and then browse. This a dream come true for me. The reality of carrying around hundreds of thousands of pages of classic literature works one single device like this is extraordinary.