I started with this course because I am interested in topic modeling. The first three weeks were the most useful for me, and were sufficient to give me a good start. The rest of the course was a bit more difficult to follow, mostly because the lecturer started giving highlights and skipped many details. This upped the pace, and I frequently had to pause the lectures to think about the contents. For me, it would have been preferable to replace weeks 4-6 with a more in-depth treatment of an extension to topic mining. Also, the lecturer's pronounciation is often a unclear, and I really needed the subtitles.
Having said that, I did learn a lot and am able to start trying topic modeling in practice.