Using your Fender Japan Hama Okamoto Signature Precision Bass Guitar is easy. First, make sure the strings are properly tuned using the 'Lollipop' tuning machines. You can plug it into an amplifier and start playing. When you're done, put it in the gig bag for storage and transport. For maintenance, wipe the strings with a clean cloth after each use to remove sweat and dirt. You can also clean the fretboard with a suitable cleaner to keep it in good condition. Avoid exposing the guitar to extreme temperatures or humidity, as this can damage the wood and hardware. If you notice any issues, like loose parts or strange noises, it's best to take it to a professional guitar technician.