I mentioned the iTunes University over a year ago. It was great then, and it is even better now, so I am mentioning it again.
Although you access it through the iTunes Store, all the content is free. And it is all provided by quality educators, from MIT to Stanford to Oxford to …
Is it really good for learning? Yes, it is. In fact, a recent New Scientist Article noted that students who listened to the iTunes lectures, instead of attending the class, outperformed those who attended the class!
Of course, you don’t have to be an official student to partake of the iTunes University course material. You can be an old retired character, like me, or a fully employed busy professional or a stay-at-home mom, … Whatever your situation is, I heartily recommend that you set aside some time to dive into the material. I am confident you will find something of interest.