You can't access all the course material without passing quizzes. To pass the quizzes, you need a text book. Upon paying for the course, they send an email saying there are 2 ebooks for you, but not only is it impossible to reach the place the ebooks supposedly reside unless you are on a PC, what is actually there is a link to where you can buy the books, written by the teacher of the course. The course does not disclose that text books are required and must be bought until you have paid for it. The course material prior to passing the first quiz is just interviews with practitioners. It's not in the least useful.
