It is a pretty decent class. The material covered is very useful, but the lectures often delve waaaaay too deep into the theoretical stuff. None of the exam questions were like that, as they all focus on application rather than theory.
Speaking of the exam, the final exam was just like the one given as practice. I thought it was going to be harder due to the online format (since we're given 24 hours), but it was definitely doable under 3 hours (I did it in 2&1/2 lol).
The grading is a bit... mysterious? I have a 97.2% cumulative total, and still not an A+. I don't really understand how the TA grades the homework too... Sometime he just marks off something without explaining, and didn't reply to my email inquiries. :(
The TA was definitely NOT helpful, he was unable to explain any concepts concretely at all. However, he basically did most of the HW questions in discussion... So I find them helpful. :)
Overall the class was decent, and I would take another class with him again (but not the TA).