The child is described as "good with computers" and genuinely interested in IT as a career. My initial thoughts are to make a basic assessment of where their skills are at, identify the the career choices that suit their interests and then plot a critical path between where they are now and what they have to do next.
I am mindful about delivering the most positive experience for the child vs my available time. What have you done that is similar? What are the pitfalls? Are there any resource that you can recommend? Have you been mentored and what was your assessment of the process / benefit?