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
Principled BSDF — Blender Manual
glTF 2.0 — Blender Manual
Blender 2.8 How to use PBR textures with principled bsdf Cycles/Eevee - YouTube
Blender Tips - Principled Shader - Automatic Texture Setup - English - YouTube
How to Use Blender's new ULTIMATE Shader: Principled — Blender Guru
Principled BSDF shader | Blender 3d, Blender, Tutorial
node editor - Add two Principled BSDF with alpha - Blender Stack Exchange
How to Use Blender's new ULTIMATE Shader: Principled — Blender Guru
cycles render engine - How to use the Principled BSDF shader to create an old-paper-like material? - Blender Stack Exchange
Principled BSDF for Physically-Based Rendering in Blender
Disney Ubershader now in master! ("Principled BSDF") : r/blender
Principled BSDF — Blender Manual
Adding shader effects if material is not controlled by the principled BSDF? - Blender Stack Exchange
Principled Hair BSDF — Blender Manual
Principled Volume — Blender Manual
Verge3D for Blender: Shader Nodes Reference — Soft8Soft
shaders - Where/How does the Principled BSDF incorporate Fresnel? - Blender Stack Exchange
Principled BSDF is based on PxrDisney - PxrDisney is legacy - Blender and CG Discussions - Blender Artists Community
How to Use Blender's new ULTIMATE Shader: Principled — Blender Guru
Basic Principled BSDF – Blender Knowledgebase
Principled BSDF — Blender Manual
Blender 3D tip — Realistic Specular value in Principled shader - BlenderNation
All Blender Principled BSDF Settings Explained - YouTube
Principled BSDF IOR Fix - BlenderNation
