Using these Deltana hinges is easy. First, make sure the door and frame are clean and dry. Place the hinge on the door and frame, aligning the screw holes. Use the provided #12 x 1 - 1/4 inches wood screws to secure the hinge firmly. When opening and closing the door, the ball bearings will ensure smooth and quiet movement. As for maintenance, you can use a soft, dry cloth to wipe the hinges regularly to keep them looking good. Avoid using abrasive cleaners as they can damage the brass finish. If you notice any looseness, check the screws and tighten them if necessary. These hinges are designed to last, but with proper care, they'll serve you well for a long time.