Using this chili pepper mill is easy. First, open the top of the mill and fill it with dried chili peppers. Then, hold the mill with one hand and turn the adjustable knob with the other to set the coarseness of the grind. Start grinding by twisting the top part of the mill. You'll see the freshly ground chili peppers come out. As for maintenance, keep the mill clean by wiping it with a dry cloth after each use. Avoid getting water inside the grinding mechanism as it's made of stainless steel and may rust if exposed to excessive moisture. When not in use, store it in a dry place. If you notice the grinding getting a bit difficult, you can use a small brush to clean the mechanism gently. With proper use and care, this pepper mill will serve you well for a long time.