This document is an introduction to a book about English grammar. It explains that the book aims to teach English grammar in a simple and straightforward way, assuming no prior knowledge. It is intended for anyone wanting to improve their writing skills or understanding of English. The introduction outlines the workbook approach used, which presents information in small steps and includes exercises to help readers apply and practice new concepts before moving on. It also notes that the book focuses on Standard American English but acknowledges that all dialects of English are equally valid linguistically.