There are several ways to take notes when listeing to a speech and some methods might be more effective for your way of learning than others.
However, there are some actions to make this process faster that pretty much work for everyone.
The best way to write notes is to stay focused on important things and only write these important things down. If it's about a subject that you understand enough, you can go as far as only writing keywords, as these will help you, as reminders for whole ideas, later when reading the notes.
Answer:
The narrator's point of view allows the reader to develop a better understanding of the author's opinion. The narrator's point of view allows the reader to understand the perspectives of all of the characters.