Thanks for answering all my questions. I went to the SanDisk
page and looked for cards. I didn't see the 64 GB one, but from the price of the 32, I think that it is safe to say that I would not buy it. I'll probably stick to 8GB.
And I thought of another question. If I'm outside, reading, and it starts to rain, I'm obviously going to take cover, but would I have to do anything in particular to protect the reader?