Hey its May and many folks in PA are out sailing every day. My advice is find a local club, get signed up and be out sailing on Saturday. Within a few weeks you can be moving smoothly along the learning curve. Don't work about classes hrer or there, get a few weeks at the tiller and enjoy.
What seems long ago, I started sailing with a 30 day June membership at http://www.community-boating.org/
- real cheap and unlimited boat use. I bet Philly has something similar. By September I was much better prepared to buy my first boat, you will be too.