Who is afraid of the difficulties of the Russian language? Simple explanations for everyone who wants to write correctly

Scientific and popular book about the rules and patterns of the Russian language. Briefly and clear about the most difficult cases.
literacy today is important not only for those who work professionally with texts - it is important for everyone who works with people. Is it necessary for you personally?
Yes, if you work with children. Yes, if you are a lawyer, doctor or expert in any other advisory sphere and count on serious customers. Yes, if you are busy in trade. And especially if your image (or image of your company) is associated with social networks and blogs.
This book will help to quickly remember the simple rules of the Russian language and will always be at your fingertips, including in the most difficult cases (NN in different parts of speech, spelling is not and no and so on).
For whom this book
For everyone who needs competent speech.
In addition to the obvious fact, that literacy is necessary for everyone, whose profession is associated with texts (proofreaders, editors,