PLEASE. Do everyone a favor and write an Amazon review if you end up reading a book (or trying to and giving up in disgust). It does not have to be much. Just tell what you think of the book. By the way, most of the time I have found the 1 and 2 star reviews on self published works to be far more revealing about the book than the more stellar reviews.
From the top 100 free list
Food Scrap Gardening: How To Grow Food from Scraps, Reduce Waste and Feed the World (Gardening Guidebooks)
[3rd day. #47. Seven reviews - all 5 star. Has picked up 5 reviews in two days - pretty impressive for this kind of thing.]