Best free courses and lectures

Not every teacher is a great teacher. Not every course is a great course. So, this list is my effort to help you separate the winners from the losers.This list of the best academic podcasts and webcasts is a work-in-progress. As I discover new courses and lectures, I add to the list. Your comments and suggestions are always welcome. Also, please let me know if you find errors or a broken link. You can contact me by leaving a comment at the end of the page. Newcomers can get up to speed by reading Getting started.For a description of my criteria for choosing a course or lecture for this list, click here. Remember: these are my opinions only. For other possible courses, check out the links to the right and the courses listed here.