answer:Take notes while viewing. Then treat your notes as as a research project. Start with item number one. Take your time. The internet is the most amazing library of all time. None of us, even the most pedantically over-educated, understands all the nuanced experiments and discussions on Nova. Neither does David Pogue, who is often the intrepid narrator and guinea pig. During a wonderful program on food and nutrition, for example, he eats some pretty weird stuff to make the program interesting.