I saw Solo Learn but did not check out, I am not sure of the level of complexity it would present in real. EdX courses are in truth, God send, hundreds of mill

I saw Solo Learn but did not check out, I am not sure of the level of complexity it would present in real. EdX courses are in truth, God send, hundreds of millions of people around the world have only mobile as a computer, if they can access EdX courses and simultaneously, in some way do those programming exercises on mobile itself, they would be so much better off.