For healthy soil use this 4 year crop rotation plan by vegetable families | PreparednessMama
Crop Rotation - give it a go http://www.woollygreen.com/2014/02/07/vegetable-gardening-crop-rotation/
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Crop Rotation Made Easy: How to Prevent Pests, Disease, and Maintain Healthy Soil With Crop Rotation
Off the Grid Living
Three Garden Ideas You'll Want to Consider Simple ideas with big harvest! Vegetable gardening is a great hobby but more than that it is a great source of fresh
Crop rotation doesn't have to be a headache. With this simple rotation schedule you'll have fertile soil and beautiful vegetables every year with less work!
A Guide to Permaculture: Crop Rotation
"... rotate your crops within the land you already have with crops that tend to enrich the soil that has been depleted by your main crop, naturally returning your field to a cycle of fertility..."
Companion Planting CheatSheet. Love these tips, not just the plant but why.
Crop Rotation Chart Anna Langbein blog