Using these spot lights is easy. First, get a licenced electrician to install them as required by the warranty. The installation instructions sheet in the box will guide them. When choosing globes, go for the recommended CLA LED globes GU1001 & GU1002. These lights can handle a wide input voltage range, so you don't have to worry too much about the power supply. Remember, they are designed for outdoor use and have an IP65 rating, which means they can withstand dust and water splashes. But still, avoid using them in extremely harsh conditions. For maintenance, simply wipe the lights with a soft, dry cloth regularly to keep them looking good and functioning well. If you have any problems within the 2 - year warranty period, you can get a replacement.