You might try some of the local sailing clubs. Most are always looking for crew. You might start out as rail meat (someone who sits on the windward rail) but you will get an opportunity to be on a sailboat. From there you can pay attention and learn before making any kind of investment.
You might also just go down and hangout at the docks. You will find that most sailors are friendly and happy to talk about their experiences. Ofter this leads to an offer to go sailing. I've taken complete strangers out many of times just for the extra hand as i single hand most of the time.
What ever you decide good lock and welcome to Sailnet.