A Way with Words is a fantastic podcast, also aired on many NPR stations. Definitely check it out if this topic interests you. http://www.waywordradio.org/ http

A Way with Words is a fantastic podcast, also aired on many NPR stations. Definitely check it out if this topic interests you. http://www.waywordradio.org/ http://www.waywordradio.org/ They usually have a segment about tracking the origins of certain words/phrases, often to a regional dialect. And they have segments about pet peeves or settling grammar disputes, e.g., between spouses. Listening to the show has helped my pedantic tendencies. I still think it's important to know the current established, mainstream grammar rules and vocabulary, but it's also important to understand that language is always evolving and highly dependent upon context.