Coursera 19 hours worth of material , 6 weeks long 19 hours worth of material , 6 weeks long

Coursera 5-7 hours a week , 11 weeks long 5-7 hours a week , 11 weeks long

Coursera 5-7 hours a week , 7 weeks long 5-7 hours a week , 7 weeks long

Complexity Explorer 2-4 hours a week , 7 weeks long 2-4 hours a week , 7 weeks long

Coursera 4-6 hours a week , 6 weeks long 4-6 hours a week , 6 weeks long

edX 4-5 hours a week , 14 weeks long 4-5 hours a week , 14 weeks long

Coursera 10 hours worth of material , 4 weeks long 10 hours worth of material , 4 weeks long