For me this is the best of the online courses. Jennifer Widom has a fantastic teaching style, and the conversational presentations are far more effective that

For me this is the best of the online courses. Jennifer Widom has a fantastic teaching style, and the conversational presentations are far more effective that recorded lectures. The exercises were good an challenging. I took the original course, and the one area I gave feedback that needed improvement were the forums. The new forums run by Piazza seem to be a big step forward. It was so good that I will take a refresher and try to find time to do more exercises.