Hungry minds never stop learning, and with every skill that they master and every course that they finish, a new world of opportunity opens up right in front of them. It's a known fact that education opens doors that would otherwise remain unopened for the rest of the person's life, and while some people take classes to make more money, others do it to enrich their lives. For example, it's one thing to take a locksmith course in order to offer that service to clients, while it’s another to explore the meaning of life through a Great Courses DVD. In fact, even students can benefit from taking these types of classes to supplement their current education. When you shop on eBay, you can browse a variety of brand new and pre-owned courses that come in DVD, CD, or book form. You can also find many reliable sellers that offer home study, correspondence, and even certification courses. Not only can you complete the curriculum at your own pace, but perhaps the best part is that you get to feed your mind from the comfort of your own home.