Using the Access Lighting Poseidon Single Light LED Turtle - Friendly Outdoor Wall Mount Fixture is easy. First, find a suitable spot on your wall, like your porch or pathway. Make sure the voltage in that area is 120v, which is the voltage this fixture needs. Then, mount it on the wall according to the instructions. The included lamp has an E - 26 base and is an A - 19 type, so you don't have to worry about getting a new one right away.
When it comes to safety, this fixture is UL (US/Canada) Listed, but it's not ADA compliant. It's rated for wet locations, so it can handle some rain and moisture, but don't submerge it. It's also Dark Sky compliant, which means it won't cause too much light pollution.
For maintenance, since the fixture is made of steel, you can clean it with a soft, damp cloth. If the lamp burns out after a while, you can replace it with another 3 - watt A - 19 lamp with an E - 26 base. Keep enjoying the warm, amber glow this fixture provides while doing your part to protect the environment.