model texturing and UV tutorial. ..advanced?

Thank you Tim! Ive worked with normals and even displacement maps. Speculars and etc. My thing is the very advanced UV layouts I see. Like your scifi hallway…im still.mindblown…I see that quixel was used but im guessing its still not available…do I need a program like that to achieve that sort of look?? I use blender for some.models and I use gimp but ive never drawn anything on a model bc I dunno how to lay it on the UV. …is that where quixel comes in or do I still have other things I need to learn??

Thanks!!