How do i import my own textures to use in WM?

Help! How do I...
2
  1. “File” generator set to “rgb” instead of “heightfield”. This imports single textures.
  2. “Material” generator set to “file” to import PBR textures as a set, into a localspace packet. You can tile them using “instance tiling” node, layer them using “layers” node. View them overlayed using “Scene View” node.

You can author full PBR mega materials inside wm, just need some intermediate skills.