Most wall paper will cove off easily with a steamer. Usually the process is hit it will the steamer and scrape off the outer layer, hit it with the steamer again and scrape off the under layer, wash with sugar soap and go.
Sometimes, however, people decide to stick the peeling edges down with all manner of sticky substances. Sometimes the wallpaper has different glue.
Reno tip for today- You can buy wallpaper glue disolvers but I didn't find it worked. You can try acetone but it will take the paint off. I found a 50/50 mixture of metho and water worked well. Please make sure you use gloves and a mask though as inhaling too much metho can be very very dangerous.