iTunes U

If you're a student this could very well be a great resource for you to use.

iTunes U is a free, hosted service for colleges and universities that provides easy access to their educational content, including lectures and interviews, 24 hours a day, 7 days a week.

Through iTunes U, students can download content to their Macs or PCs, regardless of their location. They can listen to and view that content on their Mac or PC, or transfer it to iPod for listening or viewing on the go. Instructors can easily post and change content on their own without impacting the IT department. And, of course, students can upload their own content to share with professors or with the class.

Many educators at great schools which includes Stanford University, University of Wisconsin, Madison and University of Michigan and School of Dentistry are now using iTunes U to enhance teaching and learning.