Using the Deltana 3.5 x 3.5 Square Hinge is easy. First, find the right spot on your door and the door frame where you want to install it. Make sure the surface is clean and flat. Then, use the #10 x 1 inch wood screws provided to attach the hinge firmly. For best results, you might want to use a screwdriver or a drill. When it comes to maintenance, it's pretty simple. Just wipe the hinge with a soft, dry cloth regularly to keep it looking good. If it gets dirty, you can use a mild soap and water solution, but make sure to dry it thoroughly afterwards. Avoid using harsh chemicals or abrasive materials as they can damage the finish. Also, check the screws every once in a while to make sure they're tight. If you want to change the look, you can choose from the available fine finishes or add decorative finials. Enjoy the long - lasting performance and elegance this hinge brings to your doors!