"It's awfully important to know the category before you lay your money down," he said. Discovering a child's real talents would be even better, he added. "Your mission as a parent is to say not 'How smart is my kid?' but 'How is my kid smart?' " he said. "You focus in on that and then, wherever the kid goes to college, he'll know, 'This is what I'm good at.' "
Q : What does "in on" mean? Is it an idiom? I can't find that kind of words.
All the best,