I found this tutorial that gives an excellent overview of the functionalities of SBP. In addition to the narrator's charming French-accented English, he shows how storyboard panels can be drawn directly into the program, dragged-and-dropped from a library and imported. My favorite part was the large background drawing that had a camera move added to it. This type of thing is difficult to do in other programs but is simple and intuitive in SBP.
Take a look, especially if you're new to the program. You won't be disappointed.