Smashing Magazine has collected over 50 useful and practical tools and resources that will help you to improve your writing skills. You will find copywriting blogs, dictionaries, references, teaching classes, articles, tools as well as related articles from other blogs.

Click on the link to see how it works.

http://www.smashingmagazine.com/2009/06/28/50-free-resources-that-will-improve-your-writing-skills/