Ok first timer here doing DIY, I'm sorry I don't know much. I am trying to paint my kitchen but I am having to get through two layers of wallpaper at the moment. When I peel back the wallpaper, it looks like the walls are wood and some areas have like a white coating on them (this is after I take the backing off of the wallpaper so I know it's not that). On the other side of the walls that faces towards the living room are wood so does that mean that the whole wall is wood all the way? If so can I paint it as is if I sand it? Can I use drywall mud to patch up some unevenness/holes? Help, I have no idea what I am doing!!!