Like the title says, I'm running into a wall right off the bat. When I connect the Image Texture box to the BSDF Base Color node, nothing changes, there is no color. I've tried to make sure the Image Texture box has the same settings on the screen, Color_Grid_... etc. I can make the colors and numbers show on the screen like the lesson by going to the Viewport Shading box and under Object Color switching it to Texture. This shows the correct display like the lesson without even adding an Image Texture box to the BSDF node, but doesn't work so well in trying to follow the lesson. Help!
P.S. Maybe I'm missing it, but there doesn't seem to be any explanation how to use the included files, which files to include or really any help at all regarding the course materials.