T6 is Terminal 6 at JFK, Jetblue's terminal (until T5 construction is complete). Can't help with the prep course. I got called six days before my interview. No tech questions, just "Tell me about a time..." questions. They want the situation, the action you took, and the results. Many are people questions, and flying questions should emphasize the team (CRM). You will be judged on Skill, Safety, Integrity, Caring, and FUN. Last one is important, so try to enjoy yourself. It is actually a pretty good experience. Good luck.