My family survival plan brings us 52 different wild edibles. Some of these like purslane and dandelions I already knew about and have eaten but many of these I did not know were edible. Nice to learn in case its ever needed. The way grocery prices are going I may need this info sooner rather than later.
http://www.myfamilysurvivalplan.com/52-plants-in-the-wild-you-can-eat/
Nature’s Garden: A Guide to Identifying, Harvesting, and Preparing Edible Wild Plants
The Forager’s Harvest: A Guide to Identifying, Harvesting, and Preparing Edible Wild Plants