Where can you get boeing flight training?

I thought your question was how to get a 737 rating. Which by the way you can get here: http://ftiratings.com/fti/ But, you don't just start on huge jets. You won't fly one till you're about 35-40 unless you choose to get the 737 rating which can up your chances a lot. Everyone starts out on Cessnas. On your PPL you fly - Cessna 172s, 152s, or Piper cherokees, or diamond DA20s usually. Or a lot of times taildraggers like the piper cub. On your commercial and multi-engine you fly - Piper Senecas, Seminoles, or beechcraft duchesses. Then when you move to a regional airline still small planes - Embraer jets. Dash 8s. Saab 340s. CRJs. Some regionals have big jets though (Embraer 170 is quite big). Then when you move to a major airline you finally start flying the jumbo jets. Still you start out on small planes though like the 737 before you ever move up to flying huge jets. And you might never fly a Boeing you could fly Airbuses. A thumbs down heh? How does this get a thumbs down. Whats wrong with it!?

No, you could not just go fly a Boeing 777 after flight school. Even if you paid the $90,000 plus to get a 777 type rating, you will not be hired by any airline. Flying for the major airlines takes many thousands of hours. 3000-4000 as Skipper7 said. Most full-time commercial pilots only fly about 300 per year. Many more log way less than that. It can take decades to have enough hours to be ready to apply for a major airline, much less be hired. Your question is a little silly. Kinda like saying, I want to be a brain surgeon, right after I graduate from CPR class.

You get it at the airline that hires you to fly those planes.