Today is National Proofreading Day, a chance to thank the editor in your life and double-check your writing for mistakes.
You can also check out EditMinion, a robotic copy editor that will spot simple grammar errors before you publish or send an email. Follow this link to check out the free tool online, a quick way to catch adverb abuse, weak words, passive voice and other common mistakes.
Business writing coach Judy Beaver has collected an entire page of proofreading resources to help you with your manuscript. In addition, Grammar Girl has a great essay filled with practical proofreading habits.