Using your kitchen thermometer is a breeze. First, make sure the thermometer is clean. Then, insert it into the food, meat, or place where you want to measure the temperature. Wait for a few seconds until the reading stabilizes. When you're done, you can switch between Celsius and Fahrenheit according to your preference. As for maintenance, keep it in a dry place. You can clean it with a soft, damp cloth. Avoid dropping it or exposing it to extreme temperatures outside its measurement range. Also, don't submerge it in water for a long time as it may damage the internal components. If you notice any issues with the accuracy or display, it might be time to replace the battery or the thermometer itself.