The first step to stringing Christmas lights on your house is to decide where you want to place them. Consider which areas of your home will be most visible from the street, and make sure to plan out a design that will accentuate your home's best features. You may also want to consider adding lights to your porch, roofline, and even your trees. Once you have a plan in place, you'll need to gather the necessary materials. You'll need a ladder, a power source, and of course, plenty of Christmas lights!