The Pentagon Sailing Club is the perfect place to learn to sail, or spend more time sailing. The club is ran by volunteers out of Capital Cove Marina on Bolling Air Force Base in SE Washington DC. They offer a complete line of instruction and maintain their own fleet of club-owned sailboats. My wife joined the club years ago, took their classes, and went on quite a few sailing trips in the Chesapeake Bay and even one to the Caribbean with club members. Please note phone number given is for marina where meetings are held, membership communication is via email.