Why is Principled Hair BSDF not showing the underlying texture paint? - Particles and Physics Simulations - Blender Artists Community
How to Use Blender's new ULTIMATE Shader: Principled — Blender Guru
How to Use Blender's new ULTIMATE Shader: Principled — Blender Guru
Specular BSDF — Blender Manual
Here's a free Principled BSDF Shader guide to help Blender users, an extract from the free PDF guide and YouTube tutorial below, hope you find it useful :D : r/learnblender
Blender 2.8 How to use PBR textures with principled bsdf Cycles/Eevee - YouTube