With the purchase you will receive a file with different combinations of nodes in the "shader editor" section (shown above). To create new backgrounds or animations, simply change the color and the "W" value that is shown in the shader editor. Remember to check the modifiers before rendering so as not to subdivide the plane too unnecessarily. The subdivision area is between 6 and 9. 

By selling the file and not the course you have direct access to the resource and can start creating your own backgrounds and animated wallpapers right away.

The material is 100% procedural and very intuitive to use so that even beginners can create backgrounds without limitations due to in-depth knowledge of Blender.