Well seems i know a couple of them and I personally completed an introductory course on python on coursera. I feeling the urge to further pursue it and add rubby to, cos the steemit platforms kind of can be connected through those.....
But I have limited time; I will work on something

Hey u missed a couple;

• Edx
• Codeacademy
• udacity
• yeah.......there are many more.... I think I alway bookmarkthem or so