This document provides an overview of essay writing. It defines what an essay is and lists its key characteristics as unity, order, brevity, style, and personal touch. Essays are classified into narrative, descriptive, expository, reflective, and imaginative. The document outlines the typical parts of an essay, including the introduction with a hook, thesis, and transition sentence; body paragraphs with a topic sentence, details and examples, and concluding sentence; and conclusion with a summary and clincher. It also discusses revision to improve clarity, unity, and coherence, as well as proofreading for errors in grammar, spelling, and punctuation.