Using this Mirage tropic mask and snorkel set is easy. First, adjust the straps on the mask to fit your face comfortably. Make sure there are no gaps so water doesn't leak in. Put the mouthpiece of the snorkel between your teeth and close your lips around it. When you're in the water, use the purge valve on the snorkel to clear any water that gets inside. As for maintenance, rinse the mask and snorkel with fresh water after each use to remove salt and sand. Let them dry in a cool, shaded place. Don't expose them to direct sunlight for too long as it can damage the materials. Also, store them in a soft case to prevent scratches. Before each use, check for any signs of wear and tear, like cracks in the lenses or holes in the skirt. If you notice any issues, it's best to replace the parts or the whole set to ensure your safety and a great experience.