Stanford University opened their CS193P iPhone Application Programming class a few months ago focused on developing iPhone apps within the Cocoa touch framework. Since then they have made several complete lectures available for free download in PDF format.
To follow the course, you’ll need an Intel Mac and the iPhone SDK. You can check out the PDFs that are currently 
available (there are quite a few) at Stanford.edu. Note: they start at the bottom of the page.
[via iPhoneFreakz]
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