I say skimming through a book is bad for you because 1. You could missed little details or important details. 2.that can also effect your eyes if your reading to quickly.
Can you comment the article because there's no image on a article. Hope this helped, you probably didn't notice.
Interior isn't a type of narration. There's only third-person limited, and omniscient. No such thing as interior. The type you're missing is second-person narration.
"Who" is in the nominative case here. It is the subject of the sentence.