You would need to look at the resort maps for the following resorts:
CR (walk to MK)
Poly (walk to TTC for easy monorail access)
SSR (walk to DTD)
OKW (longer walk to DTD)
Epcot resorts: BW, BC, BCV, YC, Swan, Dolphin (walk to Epcot and DHS)
You can also walk back and forth between FW and WL, as well as between Poly and GF, or POR and POFQ.
Other than that, you can't really walk from a resort to an attraction area, even though it looks possible. If you are allowed and safely able to walk, there will be signs posted and a designated walkway. There are a few brave souls who try to walk from CBR to the Epcot resorts, in order to walk to Epcot and DHS. Physically, you CAN do it, by exiting the corner of the parking lot and crossing two streets (there are crosswalks, but no sidewalk until you are across Buena Vista Drive), but it's not really a good idea.