Oops, when I edited I lost the link -sorry. And anyway, this free book was about NANY which involves counting calories and eating Atkins brand meals and bars NANY wasn't written by Atkins.
It seems the books that were free might not stay free, so its a good thing to have a look on Amazon frequently to see what new freebies are coming up. Would be a shame to miss something good. My Kindle has a nice little selection of books now: Fiction and Diet books, -all in one place (on Kindle Laptop AND Tablet ), reading for all occasions, LOL!
There's a really fab website called dailyfreebooks.co.uk - you can register for the areas that you like reading (eg mine is crime/food/gardening/travel) and you get an email about 10am each day listing all the free kindle books in those categories
And sorry to outdo you Lynne but I now have the kindle app on four (non-Kindle) devices lol!