Like performing dental work with a ballpoint pen or greeting your father-in-law, golf requires a steady hand and a wealth of patience. Learn from an expert with today's Groupon: for $35, you get a one-hour golf lesson with PGA member Paul Gamble at Bent Brook Golf Course (up to a $90 value). Gamble, a Class A PGA professional who has been Bent Brook's head teaching honcho since 2005, guides golf greenhorns through the sport's hurdles with mastery and finesse. He uses SwingModel software to synthesize the world's best swings, and then compares his students' recorded forms against the master strokes. Your hour-long lesson will take place in one of three teaching studios at the Bent Brook Instruction Center, where Gamble will diagnose your swing's ailments, prescribe thoughtful cures, and direct you to the nearest cauldron shop.