This was my first course on Codecademy, and I have to say I was really impressed. The interface was great, very intuitive with the concepts chunked up into an easy to follow way.
I didn’t try the Projects and Quizzes as they’re part of the Pro membership (which I’m not seriously considering giving a shot), but everything else was pretty great. I’d say I learned a couple of new tricks and am a lot more comfortable using the newer ES6 syntax in my projects now.
I’d highly recommend Codecademy to those looking to learn to code or to improve their coding skills.