The answer to 'how to maintain shingles' is to regularly inspect and maintain your roof's shingles. This includes checking for cracked, curled, or missing shingles, and addressing any issues promptly to prevent further damage. Regularly clearing debris like leaves and branches from your roof can also help extend the lifespan of your shingles.
It's recommended to inspect your roof at least twice a year, in the spring and fall. If you notice any significant damage or wear, it's best to call in a professional roofing contractor to assess the situation and make necessary repairs.