Using the Brizo Beauclere Widespread Lavatory Cross Handle Kit is easy. Just turn the cross handles to adjust the water flow and temperature. When you want to get hot water, turn the handle towards the red area, and for cold water, turn it towards the blue. For the temperature - indicating glide rings, if you've ordered them separately, simply attach them following the included instructions. As for maintenance, clean the handles regularly with a mild soap and a soft cloth. Avoid using abrasive cleaners as they may scratch the surface. Also, check for any loose parts periodically and tighten them if needed. This will help keep your kit in good condition for a long time.