Hey there GT, has anyone had any experience with coursera?

I enrolled in a course that starts in a few weeks, but I'm not sure I'll have time to complete all of the assignments, because it overlaps with a summer class that I'm taking for actual credit at my uni. Is this bad?

I honestly don't care about getting the little certificate of completion; I'm mostly just using it because the reading list is stuff that I need to read this summer anyway, and I'm hoping that having the lecture videos will help motivate me.