Honestly, This is going to sound slightly mean and unrealistic but I think it would work. I would have them start with Assembly and then dabble with C++. At

Honestly, This is going to sound slightly mean and unrealistic but I think it would work. I would have them start with Assembly and then dabble with C++. At 12 years old they can dedicate lots of time the concepts. Yeah they might not be deving anything cool right away but it the long run they will be amazing.. So I suggest Assembly, Visual C++ using Visual Studio.