D7: index finger on the G string, 2nd fret, index finger on the C string, 2nd fret, index finger on the E string, 2nd fret, middle finger on the A string, 3rd fret
Songs with D7: Bunt sind schon die Wälder, Weißt du, wie viel Sternlein stehen, My Bonnie Lies Over the Ocean, Molly Malone