Been doing some research since this thread had some new YouTube sites I hadn't looked at.
Some really good information out there.
I do like the engineer 775 series.
Found a new one for me anyway,
Tomorrow's Garden
Pretty advanced, but we'll explained procedures for growing your food. The series on growing oyster mushrooms is really comprehensive and shows what a pain it is to grow mushrooms correctly, but that it can be done at home.
Learn Your Land is a very good site for foraging wild edibles and medicinal plants. He really gets into the biology.