I am looking for good tutorials on Daz 4.9 shader builder and shader mixer. Can anybody help me?

I tried to look into that and got very lost. There was a tutorial or manual over at the Nvidia site. I really just wanted to use my old seamless textures so I am going the cheesy route of loading someone else's fabric shader and changing the textures and saving when I am done adjusting things like the displacement.

Thanks, I'll try the Nvidia site