I love the Christmas lights! It's one of my favorite parts of the holiday season. To hang them outside, you need to make sure you have a sturdy ladder and a level surface to stand on. You should also have a helper to hold the ladder steady. Once you're in position, you can start by attaching the lights to the roof or gutter. Make sure to use clips or hooks designed for outdoor use. If you're hanging the lights on a tree, make sure to secure them to the branches or trunk. Have fun decorating!