eBooks
Organic Gardener's Composting, by Steve Solomon, at gutenberg.org, Multiple ebook formats (www.gutenberg.org/ebooks/4342). Amazon Kindle format (www.amazon.com/Organic-Gardeners-Composting-ebook/dp/B004TS8ZFG)
Gardening without Irrigation: or without much, anyway, by Steve Solomon, Multiple ebook formats (http://www.gutenberg.org/ebooks/4512). Amazon Kindle format: (http://www.amazon.com/Gardening-Without-Irrigation-without-ebook/dp/B0082VKRXO)
A Beginner's Guide to Companion Planting: Companion Gardening with Flowers, Herbs and Vegetables, Mel Jeffreys, Amazon Kindle format (http://www.amazon.com/Beginners-Guide-Companion-Planting-ebook/dp/B00BLYAWAM/ref=sr_1_9?s=books&ie=UTF8&qid=1374070205&sr=1-9&keywords=companion+plants)