First clip and first drawing
The function storyboard of TVPaint Animation is visible in the tab Project, in the timeline. Click on the tab in order to have this :
This white rectangle is called a clip. A clip is composed of layers and pictures and is always included in a scene (in this case, we have a scene with only one clip : the both elements cannot be differentiated).
If you double click on your clip, you will access the Timeline, where you will be able to manage layers and pictures.
Come back to Project tab and select a drawing tool. Draw in the working space : you will see then the same drawing in miniature, in the clip.
If you double click again on the clip, you will see the clip's layer contains a picture with your drawing.
You have just drawn the first image of your storyboard !