Actually, the place to start would be looking into the planet's natural resources; What's likely to be found in your area, how to recognize it, the
purposes that it can be used for, etc.
It doesn't do much good to learn how to make soap, if you don't know where to find the ingredients...By knowing what you may be able to find, you
won't need the *listed* ingredients for soap because nature has a *lot* of alternatives for cleansers. This means, with a bit of resourceful
thinking, knowing *what* you can find can be used as *substitutes* for your purpose. That's what McGyver was about anyway...A person who has a broad
range of knowledge but uses that knowledge for the purpose at hand. That's the *practical* definition of "resourcefulness" anyway.