Bill, permaculture's a complex design science, and growing stuff is just one facet.
Permacultureprincipals website describes it well.
For me, it's a real learning by doing thing, supported by reading, researching, talking...
I'd start with thinking about ways to make wherever you live, and life generally, as integrated, practical and energy-efficient as possible.
For me these 'small, complex solutions' are at the heart of it.
Possibilities and potentials for creating/enhancing your environment just keep appearing once you get your 'eyes on'.
Then I'd think about a PDC or something 'official'.