Believe it or not, students, TAs and professors of physical classes can all be found on the OCW forums. The sheer wealth of discussion is amazing, but the one b

Believe it or not, students, TAs and professors of physical classes can all be found on the OCW forums. The sheer wealth of discussion is amazing, but the one big drawback is that the higher the level of the course, the less likely a quick response is. In some cases it's better to go to http://math.stackexchange.com/ http://math.stackexchange.com/ I totally agree about the textbook part of the equation, too. While I love the automated graders for CS courses on Coursera, I think it's a major, major flaw to de-emphasize textbooks in favor of lectures. It's different for language courses of course, but I've never encountered an engineering course in which lectures were a good use of time compared to working through the book and going to office hours as needed.