Well, it's quite simple really. First, you need to choose the right type of light. I would recommend using LED lights, as they are brighter and more energy-efficient. Once you have the lights, you need to start at the bottom and work your way up, carefully wrapping the lights around the branches. Make sure to spread the lights evenly and avoid any tangles. Once the lights are in place, you can plug them in and enjoy the festive glow.