Inside The Mind shows new users how to create and visualize vector fields in Side FX Houdini.
In creating other effects, you may need to create a vector field. Visualizing that vector field is also helpful. This new tutorial from Inside The Mind (Stormz) covers both.
The tutorial shows how to use volumes and VOPs to create and direct the field in the viewport. Check out this tutorial from Helge Maus that puts some of the concepts of fields to good use.