Of the millions of spelling errors made by English speakers and writers every day, more than 90% of them are misspellings of 10% commonly misspelled words.Therefore, there is a very efficient way to reduce the number of spelling errors you make. You just need to identify the commonly used English words that are usually not spelled correctly by most people, and you will solve most of your problems.This book does just that: I have collected close to a thousand such words, and I have created a special format that will help you separate correctly spelled words from incorrectly spelled ones, so that you will always be able to proofread your work in future.This will have many benefits in every area of your written English, both in your professional and personal life.