These came up in a search on "paleo". These books are free only today.
Going Paleo Without Going Broke by Paleo Lifestyle Magazine
http://www.amazon.com/dp/B009P9DL6W
This was also free yesterday. I did not bother to announce, as the
author simply took web material and put into a book. So instead of
announcing I wrote a review. Votes that you found my review useful
would be appreciated.
What Is Paleo Diet? by Vonburgundy
http://www.amazon.com/dp/B009MZ02F2