A great way to continue your education is through the materials put out by The Teaching Company.
And if you want to improve your writing, you might want to consider the course, Building Great Sentences: Exploring the Writer's Craft. It's 24 lectures (30 minutes each) on DVD, taught by Professor Brooks Landon of the University of Iowa.
It's usually $254.95 for the DVDs, but if you enter the code 32318 you can get it for $44.95.
