[david_shaw]

I would argue that at younger than 16 (I started working with C when I was 13), it's nearly impossible to properly learn programming.

Sure, you can throw code around, maybe compile some neat code and even familiarize yourself with the programming mindset. However, to understand data structures and algorithmic thinking on a deep level I think the mind must be sharp and mature.

This isn't to say that there aren't "real" programmers who are under 16 (there certainly are), but I think to learn at a deep level it might be hard when at or below that age.

Good luck!