have you googled the top five forums here?
that in itself is a mega-semester's worth of study. Much to learn -- much to discern.
I would also google Susun Weed. Stir it all up,
sleep on it--preferably, in a canoe
with lilies opening all around--
and,
after a sullen rain,
followed by a clear sky (a rarity!)
see what floats!
:-)
I feel I should add, the concept of "supplement"
is what most needs a re-visioning. IMV.