Using this coffee bean grinder is easy. Just open the hopper on the top and pour in your coffee beans. Then, turn the handle slowly and steadily. As you turn, the beans will be ground and come out at the bottom. For the best results, start with a small amount of beans and adjust the grinding according to your preference. When it comes to cleaning, simply use a dry cloth to wipe the exterior. Avoid getting water inside the grinder as it may damage the metal parts. Store it in a dry place when not in use to prevent rusting. If you notice the grinding is not as fine as before, you can give the grinder a gentle shake to redistribute the internal components. With proper use and care, this grinder will serve you well for a long time.