What is the author's style in I'm a Stranger Here Myself: Notes on Returning to America After Twenty Years Away by Bill Bryson?

This nonfiction book is written in the first person narrative perspective. This means that the person telling the story is the author himself and he delivers his views and relates events according to his own perception of them. The author does not supply any insight into the motives, feelings or actions of any other people and can only relate instances about these people from his own point of view.