Using your Cianna Outdoor Pendant Light is a breeze. Just turn the on/off switch to light up your patio or porch. It's already fully assembled, so you don't have to worry about putting it together. When it comes to the bulb, you have a single St19 - led bulb that gives off 420 lumens of light. If you need to replace the bulb in the future, make sure to use the same type for the best results. For maintenance, you can clean the matte - black metal body with a soft, dry cloth to keep it looking new. The seeded glass shade can be gently wiped with a damp cloth. Keep the light away from strong impacts to avoid damage to the glass. Since it's for outdoor use, it's built to withstand normal weather conditions, but if there are extreme weather events, you might want to take extra precautions to protect it.