Marketing your book can be more challenging than writing it, that is why a book review is so essential for selling your book. A book review can do the marketing for you, while you concentrate on other marketing efforts.
Everyone needs a proofreader or editor. It is not only novels that need a fresh pair of eyes to catch mistakes. Anything written that is important to you and your reputation, such as corporate communications, product packaging, presentations or reports, should have a professional review it for errors. When you hire a rock-star proofreader or