The best way I ever found was renting a steamer from a rental store. Had a flat plate on it that steamed the wallpaper and it just peeled right off after dissolving the paste with the steam.

Beth-I've had great luck with scoring, then wetting with Dif wallpaper remover, and steaming. I've seen videos on youtube as well.

You can also use a spray bottle to spray it down with water and a little downy fabric softener. Let it soak in and then start scraping! Don't know that anything will make it super easy, I had to scrape it off of every room in my house… good luck! You will never want to put up wallpaper again :)

Score with 80 grit sand paper then use a garden sprayer with hot water to saturate the walls

I always use Downey and hot water in spray bottle ,but if you get a piece that is really stuck ,plug in your iron and use it on the wall over a damp cloth to steam it

Dif wallpaper remover and a Paper Tiger to score the old paper. But use the Paper Tiger, or any paper-removing tool carefully, so you don't mess up the wall too much.

I've had luck with a little scoring, then heating up 409 in the microwave and soaking the wallpaper liberally.

Just recently removed 6 rooms of wallpaper in a 31yr old home we are remodeling. If possible, pull off the top layer gently by starting in a corner (works well with vinyl & can come off in big pieces). Then use the paper tiger to score the bottom layer. I bought a Wagner power steamer at a junk store for $6... It saved our sanity! Hold steamer on for a minute or two, & then gently scrape paper layer onto floor. Have another person scoop up the trash since its sticky and gets on shoes & dries to other surfaces. Then, wash the wall with a moderate amount of dish liquid in a small tub, using a soft but strong cleaning cloth. Rinse well.This step is really important if you will be retexturing & painting because you must remove the paste residue.( If you don't, your new texture will crack.) Let wall dry overnight & then retexture with premixed joint compound. Let dry again overnight & sand lightly. Then paint with Kilz to seal before your final paint coats.
I'm an expert now :) even thought I didn't want to be. Even so, I convinced my husband to install beadboard over the last 2 areas of master bed & bath because they had multiple layers of paper! Ack! Enough already!