I thought that was one of the features of Coursera. At least for some courses you join a cohort and all progress at the same pace: if you have questions you'll

I thought that was one of the features of Coursera. At least for some courses you join a cohort and all progress at the same pace: if you have questions you'll be asking them on the forums and getting answers from the same fellow students every week. Sometimes there's also peer grading where you review assignments for others. Of course, they also try to make it so you can take the course at your own pace and for less popular courses there may be no one working through it at the same time as you. There's never going to be quite the same level of peer accountability/motivation as in an in-person class.