This is more than just downloading materials and following along with a live stream; you’re actually going to have to do all the same work as the Stanford students. There’s a book, at least 10 hours per week of studying, weekly graded homework assignments, a midterm exam, and a final exam. The professors will be available to answer your questions. If you finish the work, you’ll get a certificate of completion and a final grade (no college credits, however, unless you’re a Stanford student).