Working with the Node Editor Viewport
Working with the Node Editor is similar to using a normal LightWave viewport but there are some differences.
Keyboard Shortcuts
Rename - R
Select All - A
Invert Selection - Shift I
Clear Selection - D
Fit All - Shift F
Fit Selected - F
Disconnect Inputs - Shift D
Collapse Node - Shift C
Expand Node - Shift E
Navigation
You can use the standard Alt key and mouse to pan the Node Editor window around, and Ctrl+Alt to change magnification
Adding Nodes
There are several ways of adding nodes to a network:
The most obvious way is to select from this list
This is a search field. Typing in here will update the node list live - to find the Principled BDSF material you only need to type "pr" before it is the only node available
The Add Node dropdown contains the complete list of nodes
Holding Ctrl and clicking the RMB will present a list of all nodes, like 3