Business writing skills document provides guidance on effective business communication. It discusses the key aspects of business communication including understanding the purpose, considering the audience, and building an appropriate structure. The document recommends the STAR format for written communication - analyzing the purpose, considering the audience, building the structure with salutation, content, and closing, and employing effective design with formatting, punctuation and paragraphing. It emphasizes executing communication with confidence by avoiding mistakes and ensuring the reader's needs are met.