If you're a writer, this book is a must have. Not joking. If you're a writer and you don't own this, you need to go out and buy it today. Strunk and White's Elements of Style gives advice on active voice, sentence formation, commonly used words that would be better off unused and common mistakes made by writers. These tips, along with dozens of others, are packed tightly into a 100 page reference book. It's compact and easily tucked into your laptop case or satchel. My copy is the fourth edition. One of the most helpful parts for me is the section on omitting unnecessary words. I have a tendency to be a bit verbose sometimes (you hadn't noticed, right? Right? ) and the book shows the before and after of omitting words you don't need. I learn very well by example, so this section was very useful. Also, the section on misused words and expressions was more informative than I'm comfortable admitting! Here's an example: One In the sense of "a person," not to be followed by his or her. Wrong: One must watch his step. Right: One must watch one's step. Honestly, who hasn't made a mistake like that? It happens all the time. Recommendation: This book is a must have for all writers, regardless of genre or form. Whether you write fiction, non-fiction, blog posts, forum postings, advertising copy, or anything else, if you only have one book in your arsenal (but you should have lots more!), it should be this one!