That does sound like a good clinic to attend. Breezy Point is Far Rockaways on LI, yes? This would be surf casting, which is a bit different from stream fishing with a fly rod. Heavier tackle and rods, bigger fish. Big waves that can drown you if you are not careful.
Joel, can you post more details?
For stream fishing, Todd and Charlie at the Bedford Sportsman are good teachers, and run small clinics locally on weekends. See
http://bedfordsportsman.com/.
There are lots of books about fly fishing, and many of them are quite helpful to learn about tackle, fish habits, and techniques, but they cannot help you perfect your casting and learn to find the fish as well as good guides and teachers can. I have read a lot, but have learned the most when fishing with experienced teachers and guides.
As an aside, I also recently found some amazing videos about trout, shot underwater in streams by Ozzie Ozefovich. Check out
http://www.underwateroz.com/ I think these might improve my ability to catch fish, but have not been out on a trout stream since I got them.