Using these D'Addario EJ53T tenor ukulele strings is easy. First, loosen the old strings on your Hawaiian tenor ukulele and remove them. Then, thread the new black nylon strings through the tuning pegs and the bridge, following the standard GCEA tuning. Tune the strings slowly until they reach the right pitch. When you're playing, these strings will give you a great feel and a warm tone. As for maintenance, keep your ukulele in a dry and cool place to prevent the strings from getting damaged. If you notice the sound starts to dull or the strings lose their smoothness, it might be time to replace them.