How does blender use nodes to map images to the model?

How does blender use nodes to map images to the model?

Blender uses the node's way to image texture maps of its own model, through UV expansion, create texture nodes, step-by-step completion of the mapping operation.

1, open blender, the top switch to "cycles rendering."

2, create a "plane" model.

3, the top 3d view the left corner of the triangle mouse down to the right drag a window, switch to the uv/Image Editor window, and open a map picture.

4, the bottom switch to the "Node Editor" window.