Are really we learn original coding from here?

Answer 1

Well yes. Thats atleast what this app is supposed to achieve… train you the syntax and concepts of the languages as well as language independent conceps such as encryption.
However keep in mind that to develop and publish a website/app/game you *probably* need to compile it somehwere else

Answer 2

On sololearn you are the teacher for yourself. So it depends on how well you teach yourself.