Hint - never tell people you are a producer that wants to learning editing. Most editors are scared of producers that think they can edit (and for good reason). :-)
Apple as a page were you can find Certified Trainers and centers in your area. There are classes for certification but they mostly go through the books put out by Peachpit Press they are a great place to start.
If you want to contact me offline I would be glad to talk to you about training. I'm not local but I have friends and family in the NY area.