This is a difficult question. The rebels (District 13) rescue several of the tributes towards the end of the 3rd Quarter Quell. However, the are not able to rescue Johanna and Peeta.
Katniss and peeta met at the quarter quell.H
Read the books! Or wait for the film. I'm not giving away internet spoilers. I will give you this one, though. yes, they do.
Yes, she trains with Peeta and Haymitch after the Quarter Quell announcements.
She promised to save Peeta and let him win the quarter quell.
Are you talking about the first games or the 75th quarter quell?
The only District Twelve tributes who were victors are Haymitch Albernathy, victor of the 50th Hunger Games which was a Quarter Quell with twice as many tributes. Katniss Everdeen, victor of the 74th and 75th Hunger Games, also winning a Quarter Quell where past victors were put back into the Hunger Games, and Peeta Mellark, victor of the 74th and 75th Hunger Games an other competitor of the Quarter Quell
74th. The year after that was the Quarter Quell, which occured every 25 years.
Katniss' strategy was to keep Peeta alive and make sure he wins the hunger games- even sacrificing her life for him. Also, Peeta was visa versa.
The setting basically takes place in all the districts, (when Katniss and Peeta have the victory tour) in District 12, ( Katniss and Peeta's home), and the arena for the Quarter Quell.
Katniss does not strangle Peeta. Peeta tries to strangle Katniss because he was poisoned and mind erased otherwise known as Hijacked by the capitol when they captured him in the Quarter quell which erases all of his memories of Katniss and turns them into bad ones so he tries to Kill Katniss.
Actually, their "wedding" was supposed to take place before the Quarter Quell's "special plan" was announced
Haymitch will approve the sponsors for Katniss and Petta.