Using this backup pad is easy. First, make sure you have the right Velcro - backed silicon carbide sandpaper. Attach the sandpaper to the backup pad. If you're sanding wet, connect the pad to a water source through the center water hole. When sanding, let the foam cushion do its job, and the sandpaper will smoothly move over edges and inside bowls. As for maintenance, keep the pad clean after each use. If it gets dirty, you can wash it gently with water and mild soap. When not in use, store it in a dry place. Remember, this pad can be used both wet and dry, so choose the method that suits your project best.