Using these lights is simple. First, make sure you have a licensed electrician install them as per the instructions in the box. Connect the external control gear and ensure the input voltage is between 12 - 24V. Since the globe is not included, you'll need to purchase one that fits the MR16 lamp holder (max 20W). For maintenance, you can wipe the copper surface gently with a soft cloth to keep it clean. In areas with harsh weather, if the lights aren't well - protected, consider upgrading to IP65 fittings to keep them working well and avoid any warranty problems.