For this job you will need sheets of plastic drop cloths, a garden type sprayer, and a wallpaper scraper with a razor blade that can be changed when dull, or a spackle knife. The razor scraper is best used on plaster walls, the spackle knife on drywall (or sheet rock or gypsum board.) You can use the razor edge wallpaper removal tool on drywall, but the wallpaper must be thoroughly saturated with hot water containing vinegar so it can be razored off of the drywall without damaging it. For the plastic sheets, spend a little more money for the thicker kind. Don’t use the super cheap but super thin sheets, which are hard to open from the package and will tear and will not hold the weight of the removed wallpaper lying on them when you pick them up. The sprayer has a pump handle on top. You pump this handle and build up pressure, and do it again when the original pressure has gone down. You may have seen people spraying their garden with this type of sprayer. It is perfect for saturating the wallpaper you want to remove.
Before you do anything, go to the circuit breaker or fuse box to turn off the electricity in the room where you will be removing wallpaper. Move furniture away from the walls. Place the plastic sheeting at the base of the wall, right up against the baseboard. Make sure the carpet, tile or wood floor is completely covered to prevent water damage or glue mess on floor. Make sure also that all furniture that could possibly be hit with your sprayer is covered with plastic drop cloths.