Kano's Pixel Kit is a charming introduction to coding

We all know the importance of code. It's the backbone of computing, the internet and so much else we come into contact with on a daily basis. But learning to code is still a tricky and poorly defined pursuit. I've booted up Codecademy a few times, only to try a couple of courses and realise I have no idea what I'm doing. For people like me -- of which I suspect there are many -- what's the next step?