First, start by finding the fundamental frequency of the drum. This can be done by hitting different parts of the drumhead and listening for the note that is most resonant. Once you have found the fundamental frequency, you can begin to experiment with other notes by adjusting the tension on the ropes or cords that hold the drumhead in place. Be careful not to over-tension the drumhead as this can damage it and affect its tone quality. As with any new instrument, it may take some time to get used to playing a hang drum and find the notes that work best for you.