Digital Photography School Online

If you haven't already, I recommend that you sign up for the free Digital Photography School newsletter - by David R. Beebe
If you've not already found this free site, check out Digital Photography School and sign up for their free newsletter. Each week, you'll get a list of new articles on photography tips and tutorials along with a suggested assignment and weekend challenge to help you grow as a photographer. Its a great site with over 600,000 subscribers.