I'd like to offer a quick second to whay P.L. just said. Definitely have a Plan B when trying new ideas out. For a prime example of just how steep the learning curve can be, esp. concerning wild plants, you should read "Into The Wild" by Jon Krakauer. It describes a young man's minimalist attempt to brave the Alaskan wilds. Even using an extremely comprhensive plant guide he confused two plants, one edible, one deadly, and met his fate. There are several other stories of fellows who made similar attempts and met similar ends in the book. All of the stories are non-fiction.

Ed