Using the Access Lighting Poseidon outdoor wall mount is easy. First, make sure to choose a suitable wall location that can handle the fixture's weight. You'll need to buy an A - 19 lamp with an E - 26 base and 60 - watt capacity separately as it's not included. Connect the fixture to a 120 - volt power source. Since it's dimmable, you can use any standard dimmer to adjust the light level according to your needs. When it comes to maintenance, because it's made of steel and has a wet location rating, it can withstand normal outdoor conditions. But you should clean it regularly with a soft cloth to keep it looking good. Avoid using harsh chemicals as they might damage the finish. Also, check the connections from time to time to ensure safe operation. Remember, it's not ADA compliant, so don't use it in areas where ADA compliance is required. Enjoy your stylish and practical outdoor lighting!