Things the Avengers taught me about Captain America:
1. That moment where Clint says he can fly the plane and Steve looks to Natasha, in silent question. When Natasha signals that it's okay to trust Clint, Steve does. Unconditionally.
This tells me that Steve is a man who would trust the word of his teammates-and his teammates-without even thinking twice on it. This may lead to some trouble with Tony taking advantage of that, but mostly it saves their lives, saving that split second of time most people would take to question whether or not to trust someone. The split second that becomes the deciding factor in a life or death situation.
2. "I know men with none of that worth 10 of you!"
He's obviously upset, having expected Howard to have raised his son better, and also upset that Tony kept turning all of these life or death situations into a game. Tony also corrupts Steve's trust for Fury by playing his curiosity and fears into having Steve help in the investigation of Fury's plans, causing Steve to have a little less trust for Steve.
3. "Sorry guys, computers were moving a little too slow for me."
Translation: "Technology isn always better, especially when it takes you days to crack their codes and takes me only a few hours to crack their doors."
4. "Finally! Someone who speaks English!" "Is that what just happened?"
Steve feels like a 'man out of time'. He doesn't understand anything that's going on and it bothers him, immensly. He's just a young man who had just had things starting to go his way when his plane crashed and the next thing he knows, he's been asleep for 70 years. Everyone he knows is senile, dead, or dying. He's more famous now than he was before and everyone seems to know his name, Brooklyn's not even as safe as it used to be (and that's saying something), and every bit of science he's known to be sound has either been overturned, or has had extensive research added on to it. It must have been similar to waking up on a different planet, except for all of his friends were dead. How would you feel waking up, knowing you hadn't a friend in the world and everything you'd once known to be true has changed.
5. The scene where he's threatening Loki, in this deep heroic voice. It wavers just the slightest bit, which you'd never hear unless you were listening to it.
Whether the world were ending or not, if you' been through half the stuff Captain America went through, you'd be pretty scared, too. This is a young man, probably no older than 30, who has fought most of his life just to be noticed, and now you're a celebrity who has no friends...wouldn't you be at least a little bit crazy?