I found this site which keeps track of the free books for the Kindle and, under the cooking category, I found quite a collection of books on paleo and cleaner living. Now, the diet is a modified paleo system which means that some of the better ideas come from paleo cookbooks. But full sized cookbooks are (pun alert) hard to digest and pulling the good stuff out is time consuming. The good thing about most of these little ebooks is that they are short, concise and to the point.
For instance, I found Simple Gluten Free & Paleo Bread: Fast, Sumptuous and Guilt-Free Baking Recipes and got it downloaded before they took it off the free list (it's still available for loan to Prime members. Note that the free books are apparently a promotional thing so they may not be free forever). Anyway I got it downloaded and gave it a read. Very concise. Very to the point. Still a lot of good info. The recipes are simple and the ingredients are not too outrageous although the first basic recipe uses 2 cups of blanched almond flour and that stuff is expensive But if you were looking for bread and wanted to stick to gluten-free, it looks like a great way to go. I'll have to wait for the next paycheck to try it out and report back though.
I would normally suggest avoiding any sort of bread-like food to avoid any psychological triggers but I've have a beef stew recipe that begs for bread and I've been craving beef stew.
The site has a quite a few books to peruse and it changes daily. Lots of smoothie and juice books, I noticed, and quite a few covering everything from desserts to slow cookers. There are other categories, as well. The cooking category was the one that caught my attention and filled up my Kindle first.
Here is the link again for convenience: http://centslessbooks.com/cooking-food-and-wine.html