I just stumbled across SmartFlix, which is the education and training version of NetFlix. You can rent a wide variety of training and education DVDs by mail, just like NetFlix. They have many different topics available, ranging from the mundane (cooking videos) to the more sophisticated and esoteric: welding, machine lathe operations, and knifemaking. A lot of the skill-related topics (e.g. welding, machining, etc.) used to be offered as courses in high school and community colleges, but some time in the past twenty years, most of those "live" classes were eliminated. And today, many U.S. manufacturers can't find anyone who knows how to weld or run a lathe.