Using your K&N air filter is easy. Just install it in your vehicle's air intake system as per the manufacturer's instructions. When it comes to maintenance, it's recommended to clean the filter every 50,000 miles or as soon as you notice a significant drop in performance. To clean it, use a K&N filter cleaning kit. Simply spray the cleaner on the filter, let it soak for a few minutes, then rinse it gently with water. Make sure it's completely dry before reinstalling. As for storage, keep it in a dry place away from direct sunlight. And remember, always refer to the one - year limited warranty if you face any issues with the filter.