OVER EXPLAINED! -- How do I just export my textures?

Over-Explained covers the process of exporting textures from a Substance 3D Painter scene, explaining in detail from what texture sets are, what texture channels are, through setting the... settings... in the Export Textures window, including an overview of making export presets. Over-Explained is not intended for people who just want to cut to the answer but rather need gaps filled in their foundations in order to properly understand how to do a task in their digital art software.