Using these guitar picks is easy. Just hold the pick between your thumb and index finger, then strum or pick the strings as you usually do. When using, make sure you hold it firmly to avoid dropping. As for maintenance, keep them away from extreme heat as celluloid can warp. Wipe them clean with a soft cloth if they get dirty. Also, store them in a cool, dry place to maintain their quality. These picks are not only for playing but also great for collectors, so handle them with care.