This is a picture of my screen when I added UV mapping to a basic cube. My computer won't open the soda file so I had to make do with this.

Also screenshots from Blender can't be uploaded here for reasons I don't know, so please excuse the  use of a phone camera.

This original post was just a pillar that had a texture added to it, but since I remade it to be the 3D 1 post, I chose to focus this one solely on UV mapping.