I found a great Podcast the other day called Grammar Girl, created and hosted by Mignon Fogarty.
She provides short, friendly tips to help improve your writing skills covering everything from grammar rules, word choice guidelines, punctuation and everything in between.
Give her a quick listen for yourself, here’s an example podcast (may pop a separate media player) she recently posted on Apostrophes.
Grammar Girl also has an interesting flickr pool of photos displaying the common errors seen in the real world of adverts, traffic signs, etc…
Here’s the details of her podcast –
Name: Grammar Girl
Podcast subscription Link: http://www.qdnow.com/grammar.xml
Speaking ability: Clear, concise, not condescending
Length of pods: Short, 3-5 minutes
BONUS: She also has the transcript of the shows, here’s the text for her Apostrophes show: http://grammar.quickanddirtytips.com/grammar-apostrophes.aspx