I'm really happy with it, although there is a problem with small font on two of the books I bought. In fact, I plan to buy more! I'm getting one for my daughter and one for my son.
So far I've purchased three books from the bookstore and downloaded two free books from there as well. Other downloads include three free books on buddhism from Project Gutenburg and two documents on non-destructive testing from the Government of Canada. The documents are 30-60 pages long.
I'm currently reading nine books.