Remember the essays you had to write in high school? Topic sentence, introductory paragraph, supporting paragraphs, conclusion. The classical model essay being, say, that Ahab in Moby Dick was a Christ-like figure.
So I’m going to try to give the other side of the story: what an essay really is, and how you write one. Or at least, how I write one. The most obvious difference between real essays and the things one has to write in school is that real essays are not exclusively about English literature. Certainly schools should teach students how to write.