Integrating height information into Principled BSDF for easy layer mixing? - Materials and Textures - Blender Artists Community
is there a way to add an ambient occlusion map to a Principled bsdf? : r/ blender
node editor - Add two Principled BSDF with alpha - Blender Stack Exchange
Basic Principled BSDF – Blender Knowledgebase
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