Is there a simple way to attach a skin texture to a humanod mesh? I thought this would be a relatively simple thing but it turns out
nothing in Blender is simple and it appears to be a maze of information
where I cant even find the trail let alone follow it.
Make a texture on the side bar >>> go into edit mode on the mesh >>> select it all >>> click on "mesh" on the toolbar near the bottom >>> click on UV UNWRAP it would automatically unwrap the mesh for you.

Smart UV project works, but just unwrapping it is the better option.