I haven’t done it before, but for me it is a very nice type of learning. You can do it on a moment that is good for you and do it in the pace that you like, look lectures for a second time etc. I would recommend it to others, but they have to realize that you really have to motivate yourself and I don’t think that is the best way to study for some people. I enjoyed the combination of reading the materials and getting a better understanding of it by watching the lecture.