Using this lock is easy. Just unfold it and wrap it around your bike's frame and a fixed object like a bike rack. Then insert the key and lock it up. When you're done, simply unlock it and fold it back up for convenient storage. As for maintenance, keep the lock dry to prevent rust. You can wipe it down with a dry cloth after it gets wet. Also, lubricate the keyhole occasionally with a small amount of graphite powder to ensure smooth operation. Avoid exposing the lock to extreme temperatures and sharp impacts, as this could damage the internal components and reduce its security level.