Using this ULAC chain lock is easy. First, find a secure place on your bike like the top tube or seat post to wrap the chain around. Then, set your unique combination using the resettable lock mechanism. When you're done using the lock, use the included ULAC velcro to neatly store the chain. As for maintenance, keep the lock dry to prevent rusting. If the chain gets dirty, you can wipe it with a clean, dry cloth. Remember not to expose the lock to extreme temperatures for a long time. Also, don't try to force the lock open if it's jammed; instead, check the combination and try again gently.