Down the curving driveway, go right about 50 feet, then left out into the marsh. Follow the path to the right, you'll go along Roberts Cove, around Mill Pond, then Nauset Heights, and, if you're really ambitious, all the way to the barrier beach. (Quicker by kayak.)
Or head to the left and follow this part of the shoreline path north around the Tonset area and then south along Town Cove all the way to Rt. 28 in downtown Orleans if you're really ambitious. (Quicker by walking the roads, of course.)
Either way, it's a beautiful walk. You'll see shorebirds, boaters, shellfishers, and whatever the tide brought in.