Using your new basin mixer is a breeze. Simply turn the pin handle to adjust the water flow and temperature. For cold water, turn it counter - clockwise, and for hot water, turn it clockwise. When not in use, make sure to fully turn off the handle to prevent any drips. As for maintenance, clean the mixer regularly with a mild soap and a soft cloth. Avoid using abrasive cleaners as they can scratch the matte black finish. If you notice any issues, check the water hoses for leaks. Remember, this product comes with a 15 - year warranty and a 2 - year labor warranty, so if there are any major problems, don't hesitate to contact us.