Your story was pretty much what
my story was a little over a year ago during my senior year of high school when I decided to join permies. Immediately after graduating high school, I flew across the country to meet Paul Wheaton (the guy who runs this site and the 'Duke' of
permaculture), be apart of his farm-ish type community in Montana, and take the 2 week long
Permaculture Design Course (
PDC) that he was hosting, which was taught by Permaculture Research Institute (PRI) certified instructor Howard Story. A PDC is sort of a gateway/introductory education for permaculture. Although you can learn a lot more on your own in more depth, a PDC is an organized way to get a grip on what the hell you are learning. PRI was started by
Geoff Lawton (the 'Prince' of permaculture) under the direction of
Bill Mollison (the 'King' of permaculture, and author of THE permaculture text book 'The Permaculture Designer's Manual', which is used as a basis for all PRI certified courses.) In other words, a PRI course is recognized by the people who created the word permaculture itself and it won't have any hippy spiritual stuff.
First, where are you? If you plan on being a permaculture designer in your area, it's a good idea to take a course in your area to better understand the landscape and climate you will encounter. However, even though I went to across the country to take my PDC, Montana and Northern New England are fairly similar. Also, despite the fact that my instructor, Howard has most of his
experience from Thailand (a tropical climate), I still learned a TON of useful stuff.
Second, What do you want to do with this knowledge? Unless you just want to do this for a hobby, or make a career out of teaching/consulting in general permaculture and sustainability, I have learned that its a good idea to pick a field that interests you the most and figure out a way to apply permaculture to your work. Depending on your standards, this might mean owning your own business.
I would start by learning through podcasts,
books, youtube, articles, all the threads here on permies, and experimenting in whatever you're interested in- whether it be building fine furniture out of roundwood, or growing some food. This might also give you a better idea of what you think is interesting and what is not.
With all that said, here's a little list of schools that look like they are doing some sort of permaculture/sustainability program:
http://sustainableaged.org/projects/degree-programs/
Though it does look like most of them focus on just agriculture and a few of them probably just slapped the word sustainable on the title without changing the curriculum to truly match the title.
Oh, and welcome to Permies!