Well, it can be tricky to hang Christmas lights on vinyl siding because the surface is so smooth. One way to do it is to use adhesive hooks or velcro strips to attach the lights to the siding. You can also use zip ties or small nails, but you'll need to be careful not to damage the siding. You can also try using a ladder to reach higher areas and make sure to use caution when climbing. Finally, make sure to turn off the lights before you start hanging them to prevent any electrical shocks or accidents.