1) Huge variety of courses from the best professors in the world (see Gamification course from Coursera below) or Machine Learning , Human Computer Interaction
2) They are free ( is a mistake)! time is not free.
Also signature courses at Coursera now offer credible tracks for $39, and they have more support.
Why do you as a student need support? because sometimes you get stuck, and sometimes you need human interaction to stay motivated.
3) Coursera- I love these things-
Can run the course faster at 1.75 times ( because seriously I get distracted otherwise)
Can run the multiple language CC (captions) – reading is so much faster
Best feature- in video quizzes
Most number of courses
Free!
Codeacademy-
Makes learning fun
Makes easy to learn language
I wish someone could mash more of Coursera content with Codeacademy gamification and teach hacking and data sciences to the next generation of hackers!!
Rest of the websites are good, but I stick to Coursera and Codeacademy!
5) Education empowers! Every person who learns R or JMP through a free MOOC will create more value for themselves, customers, and their society, country than had they remain uneducated because they could not afford the training.
DECISION STATS 
very informative post. Thank you for sharing!!
Reblogged this on Khuram Ali.