What doesn't work about courses that are already online and complete (say, Open Courseware, most of the Coursera stuff)? Any that do work? I run into the compl

What doesn't work about courses that are already online and complete (say, Open Courseware, most of the Coursera stuff)? Any that do work? I run into the complement of your problem reasonably often - trying to point technical people to material to help them fill some mathsy gap they need filled for work.