Wanna be a programmer? That shouldn’t be too hard. You can sign-up for an iterative online tutorial at a site like Codecademy or Treehouse. You can check yourself into a “coding bootcamp†for a face-to-face crash course in the ways of programming. Or you could do the old fashioned thing: buy a book or take a class at your local community college.

But if want to be a serious programmer, that’s another matter. You’ll need hundreds of hours of practice—and countless mistakes—to learn the trade. It’s often more of an art than a skill—where the best way of doing something isn’t the most obvious way. You can’t really learn to craft code that’s both clear and efficient without some serious trial and error, not to mention an awful lot of feedback on what you’re doing right and what you’re doing wrong.

That’s where a site called Exercism.io is trying to help. Exercism is updated every day with programming exercises in a variety of different languages. 

Read more at Wired.