When you are managing the timetable in school you won't need all the screens that are available in NOVA. The main ones you will be dealing with are the following;
Watch the video and take some notes on what is happening in each screen.
Now you have seen the video go back to your copied file (don't practice on the actual timetable file) and explore the radio buttons, drop downs and options so that you are more familiar with the screens.
Once you are comfortable then complete this section and move onto the next part of the course.