Tutorials for physical based shading in Unity 5

I’d really like to master the advanced aspects of the new physical based rendering model in Unity 5, with an emphasis on attaining the photorealism of ray traced renderers. Is anyone aware of any such tutorials?

I would have a look at Substance Painter and Substance Designer from Allegorithmic

They are supporting physically based shading with both programs and imo they are the best way to get realistically looking models into Unity.