Multires, Sculpting and Texturing ..

Hi Guys,

I started with a cube, multires then up to 6. I then started to sculpt. Now I have the mesh sculpted the way I want. Next thing texturing. Have I done something wrong straight away? How does on e texture this multires mesh? Does one need to UV Map it? I started with a cube so how could I UV Unwrap / set seams for the cube which by now is unrelated to the shape of the multires version.

Any nuggets of info appreciated - in dummies guide language if possible - step by step,