I disliked English immensely in school and now I'm paying for it! Luckily the Internet is full of writing tips like this link entitled, "Ten Mistakes Writers Don't See (But Can Easily Fix When They Do)."
Malcolm Gladwell: The Tipping Point: How Little Things Can Make a Big Difference
Susan Scott: Fierce Conversations: Achieving Success at Work & in Life, One Conversation at a Time
Seth Godin: Purple Cow: Transform Your Business by Being Remarkable
Bill Hybels: The Volunteer Revolution: Unleashing the Power of Everybody