Well, I'm biased because I've had three of them, but I still think a Kindle would be great for you. There is a thread here wherein one of our members posts about free books you can get for the Kindle. Sometimes they are an older book because the author has a new book coming out. Sometimes they get me hooked on a new author and I wind up buying 6 or 7 books in the series because I really like the author!
But you *can* find a good quantity of material for free, even for a Kindle.
Read here for a sample of the free (or cheap) books we've seen lately. But
check the price every time, before you click to buy, because some books are only free for a day or a few hours!!