Learning to fly fish: where to start?

So, I don't know a thing about fishing, much less fly fishing. But I'd like to learn to fly fish.

Where do I start? I live in Brooklyn and don't know any fishermen. Where are the books and online resources that will get me started?

My goal is to be able to fly fish along the JMT next summer. Aside from that I'd like to fish in the Adirondacks.

Thanks!