If you're looking at the same old tired wallpaper year after year because you're afraid taking it down will be too difficult a task, you'll be happy to learn of a little tool that makes removing wallpaper easy. It's called a wallpaper scoring tool. Some are round, some are rectangular, but they all do the same thing ... they perforate the old wallpaper with lots of little holes. This method takes some time, but it's the easiest way to remove old wallpaper.
Lay a tarp or plastic sheet on the floor to protect it from falling bits of wet wallpaper.
Begin by running the scoring tool in small overlapping circles over the wallpaper. Each swipe will make lots of small holes in the wallpaper. The more perforations there are and the closer together they are, the easier it will be to remove the wallpaper.
Submerge the paint roller into a bucket of warm water. As you pull it out, squeeze the excess water off the roller with your hands.
"Paint" the water onto the perforated wallpaper. Work in manageable sections that are easily within your reach. Put some gentle pressure on the roller so the water goes through the holes and gets behind the wallpaper to the glue on the back. Allow to sit for 1 or 2 minutes.
Lift a corner of the wallpaper with a putty knife, and as you pull the wallpaper from the wall, carefully and gently scrape beneath it with the putty knife.
Throw the wet wallpaper pieces into a plastic trash bag as you finish each section.