Simple, no bullshit and no scams. It's just like taking a class but in this case you're sharing with people around the world. You just need to e-mail the teacher and get enrolled in the program. I e-mailed him and I will get a reply after 18th August or maybe later. I am sure it's not everyone cup of tea but it's still a great place to learn something new and most of all it's FREE and trollable.