The course, overseen by Apple’s Paul Marcos and taught this term by Alan Cannistraro, also from Apple, has proven quite popular: it was downloaded from iTunes more than 4.4 million times last year. The latest series of lectures are updated<\/a> to include APIs from the latest iPhone OS 3.1 SDK. Furthermore, the videos are also closed-captioned for better accessibility. “In addition to helping those with hearing disabilities, the captions will be helpful to English language learners or students trying to understand the more technical aspects of the classes,” Julie Zelenski, a Stanford computer science lecturer, told The Loop<\/a>.<\/p>\n Unlike on-campus students that are officially enrolled in the class, however, you won’t be able to turn to the professor or TAs for help following along. “We get a lot of e-mails from people asking, ‘Hey, I have problems with this SDK function, can you help me do it?’” Cannistraro told The Chronicle of Higher Learning<\/em>. “And we can’t, unfortunately.”<\/p>\n Lecture videos and materials are already posted for weeks one and two on iTunes, with the remaining eight lectures being posted after they are given. They are absolutely free to download via iTunes, and are published under a non-commercial Creative Commons license.<\/p>\n