Below are the UV maps of the pillars. These include a Specularity, Occlusion, Displacement, Normals and Diffuse ( Colour ) Map. Each of these have different effects on the overall texture of the mesh.
When I first started with Blender in Dec 2014 / Jan 2015 I couldn’t go anywhere near these. UV mapping was utterly alien, but after a long period of forced learning I began to see the benefits. As soon as the benefits of a new skill become necessary to achieve what you want to achieve, I find its easy to learn it, (as long as you have an outcome that you wish the perform). Learning something from scratch without a reason to use it is lengthy and broad. Of course, you can utterly master the skill, but with computer technology, the software moves at an astounding rate. I find it more interesting to keep flowing through software.