What is the author's tone in the nonfiction book, How to Read Literature Like a Professor?

William C. Foster adopts a casual, engaging, and friendly tone in his book "How to Read Literature Like a Professor." Given the subtitle of the book, "A Lively and Entertaining Guide to Reading Between the Lines", this is highly important and necessary. Foster addresses the audience as he would a student, class, or friend in conversation, making references various types of media, from books to movies, and making references to himself and his own life as well. The highly personal style allows him to teach and make points without becoming too dry or dragged down in terms specific to English literature and interpretation.