Instead of courses, I recommend to get a couple books on Permaculture and also look to see if any universities have extension courses for Permaculture or any topic related to it. Chances are, most of the teachers are now familiar with Permaculture and can speak to the “historical” methods and the “Permaculture” methods. Yes, a lot of people have been trying to make money of the cerificstion courses, which I think is a waste of money. I started with my backyard and have used Permaculture design to re-approach working with nature. My end goal is to have a diverse forest garden that has it’s own ecosystem. But, that’s at least 10 years of work to achieve, but well worth it. I’m almost two years into this and have zero regrets. If anyone is interested to know more, I can try to share what I’ve learned or answer any specific questions.