Using this Shure SC2/58 handheld transmitter is easy. Just turn it on and start using it with your compatible audio setup. Before you use it, make sure to check your country's wireless frequency laws to avoid any legal issues. When it comes to maintenance, keep it in a dry place to prevent further rust on the grille. If you notice the performance is affected by the slight dent on the grille, it might be a good idea to consult a professional for repair. Also, always handle it gently to avoid causing more damage.