When it comes to learning a new skill, e-learning sources are preferred more than any physical institute these days. The basic reason is that they are full of convenience and have greater accessibility. Also, some of them are available for free and provides certifications too, so why should anyone visit and pay a whole lot of fees to these institutes.
Though having a degree or certification in a proper format enhances the credibility of your profile or resume. But again not everyone could sit into long lectures and learn a skill. People need flexibility in accordance with time and accessibility. So a huge number of people love to learn through e-learning websites. As we cannot ignore the fact that the online presence of the world is insanely huge and growing day by day.
So as question is best Programming and design tutorial or courses? so what i suggest that at least once Check out the best Go Programming tutorial or courses  recommended by programming community.
http://letsfindcourse.com/golang
So as many student want to learn Go Programming & want certification but unable to find best course or tutorial. So this Programming and design tutorials will help student to find the best Programming and design online tutorial, with detailed information(certification) and it will be easy for student to find course.