What is a storyboard?
A storyboard is a collection of pictures often used to break down the plot of a work of fiction in early stages. It includes pictures, arrows to point in which order the slides go, and sometimes a brief description of what the picture shows below it.
Who uses storyboards?
Everyone on the production team would use it at one point or another, whether that be drawing one, or just looking at the finished one to get more of an idea how to shoot and direct the movie/show /game visually
What should you include in your storyboard?
Pictures that show actions that move on the plot, and arrows between them showing what order things happen. A brief description is optional but could always help if some details need to be given to properly understand whats going on (e.g. if the plot is in an early stage)