Using this bathtub and basin mixer is easy. Simply turn the loop - style handles to adjust the water temperature and flow. For cold water, turn the handle counter - clockwise, and for hot water, turn it clockwise. When you're done using it, just turn the handles back to the off position. As for maintenance, regularly wipe the mixer with a soft, damp cloth to keep it looking clean and shiny. Avoid using abrasive cleaners as they may damage the matt black finish. If there are any minor leaks or issues, refer to the warranty details or contact our customer service. It's also a good idea to check the water pressure in your area to ensure optimal performance. With proper use and care, this mixer will serve you well for many years.