Blender Material Nodes
“Just in case you are not (yet) familiar with the concepts: when you create a system of nodes, you are describing a data-processing pipeline of sorts, where data “flows from” nodes which describe various sources, “flows through” nodes which represent various processing and filtering stages, and finally “flows into” nodes which represent outputs or destinations. You can connect the nodes to one another in many different ways, and you can adjust “properties” or parameters, that control the behaviour of each node. This gives you a tremendous amount of creative control. And, it will very quickly become intuitive.”