If you haven't been to the Reaping Ceremony, go ahead and comment in the previous chapter.
Role Play
The district escort takes you and your fellow tribute by the hand. She leads you to the waiting train that will take you to the Capital. There, you meet your Mentor (for instance, Haymitch is Katniss and Peeta's Mentor) and learn more about your District partner. (aka the other person from your District who's a tribute.)
If you don't have a District partner, you can make yourself one (just fill out another form) but you can only have up to two characters, and they have to be from the same District if you do.