Overall I liked this class. The homework assignments were challenging (especially the D3 heavy HW2) but interesting, and the army of TA's were generally very helpful and responsive with regards to clearing up homework questions. The lecture videos were interesting but could be ignored since they weren't needed to complete the homework. I think how much time you spend on this class will depend a lot on your Python coding experience and familiarity with D3. A lot of people see the first homework or second homework and panic due to the complexity of it, but if you break it up it's definitely doable if you're willing to struggle through it. Biggest recommendation is reviewing some of the suggested D3 learning tools like the free O'Reilly online book before the class begins. Your project experience (like most group projects) largely depends on your team and topic, so make sure you vet your team and make sure everyone is on the same page regarding project timeline and goals.