The book continues as it is the first day of training. For three days, the twenty-four tributes will all practice together, then on the final afternoon, they perform in private in front of the Gamemakers, the officials who run the Games. Haymitch asks Katniss and Peeta if they want to train together or separately, in case one has a secret skill she or he might not want the other to know about it. Peeta already knows Katniss is an excellent hunter, and Katniss feels surprised at the thought that Peeta must sometimes think of her.
In District 12, we call them the Career Tributes or just the Careers. And like as not, the winner will be one of them.
Katniss’s explanation of what a Career Tribute occurs when the tributes gather together for their first day of training in Chapter 7. As Katniss explains, the Career Tributes are those tributes from the wealthier districts (typically Districts 1, 2, and 4) who have trained their whole lives to take part in the Hunger Games.