Easy Material Setup (Shader Node Groups) - Blender Market
Node Kit - Nodes Manager - Blender Market
How to work with node groups in Blender - Artisticrender.com
A Great Node Group for Blender - Professional Texturing Made Easy — Steemit
Blender Tutorial - How to use Node Groups - YouTube
Node Groups — Blender Manual
Improving node group interface editing — Blender Developers Blog
Making Realistic PBR Materials - Part 1 — Blender Guru
Improve Your Material Workflow By Combining Nodes Into Groups – blender base camp
Node Groups — Blender Manual
Improving node group interface editing — Blender Developers Blog
Advanced Customizability for Node Groups — Right-Click Select
Free Blender Add-on for Switching Node Trees
Simplifying procedural node group. - Materials and Textures - Blender Artists Community
Group Node. Passthrough node, texture input and merge values for vector type. — Right-Click Select
Introduction to Blender's Node Groups - YouTube
How Node Groups can be made useful — Blender Developers Blog
Download 40+ Cycles Nodegroups for Free in Variety Nodepack V1.1 - BlenderNation
Blend Swap | Cycles Procedural Spiral Node Group
Improve Your Material Workflow By Combining Nodes Into Groups – blender base camp
Introduction to Blender's Node Groups - YouTube
Input socket for Image Texture shader node - Blender Development - Blender Developer Talk
procedural - What does this stone texture node group do? - Blender Stack Exchange
Improving node group interface editing — Blender Developers Blog
Frame Node — Blender Manual
How to make node group of an existing material into a new group? (in python) - Blender Stack Exchange
