One of the reviewers on this site gave this book only two stars. And he doesn't feel badly about it. He might feel *bad*, but I rather doubt it -- his reasons for rating this book as just "o.k." were thoughtful and unmalicious.
The point is: if you've ever said "I feel badly" and you weren't talking about your lousy Braille skills, you need this book. And if you've ever struggled with when to use "bring" as opposed to "take," you'll be reassured by Casagrande's sympathetic treatment of the subject. (Hint: choosing between these two words isn't as easy as it looks.) Most important of all, Casagrande gives terrific advice about when being (grammatically) right just isn't worth the fight.