Putting lights on a Christmas tree can be a fun and exciting process. First, make sure that the lights are working properly and that they're in good condition. Next, start by threading the lights around the base of the tree, making sure to spread them evenly and avoid tangling them. Then, move up the tree, wrapping the lights around each branch until the tree is completely covered. Once the lights are on, you can add decorations, such as ornaments, garlands, and ribbons, to complete the look. Have fun with it and make it your own!