The book is intended for teachers of the Russian language of high school, electives and literacy courses. In addition, this practical guide can be used as a self-teacher by anyone who has completed a school course in the Russian language and wants to write without mistakes. The rules are mastered here not separately, but in blocks associated with the main difficulties of writing. A clearly stated methodology for working with a book, a well-thought-out system of 32 detective dictations, catchy "danger signals," memorable, funny drawings and humor - all subordinated to one goal - to make literacy classes exciting and productive.