It's hard out here for a dude:
Knowing what She's Saying when she isn't saying it
Understanding the female meanings behind words can come down in a huge way to understanding tone and body language. It doesn't take a genius to sense when she doesn't feel good or is mad. Knowing when to leave it alone and when to address the subject at hand are key components to a happy life together.
“A man's face is his autobiography. A woman's face is her work of fiction.” ― Oscar Wilde
I'm fine: Does not and never will mean she's really feeling good. Women can have a hard time being confrontational so they become passive aggressive rather than expressing their feelings.
It's nothing: You done bad. No, really, just accept that you did something bad and repent. Your best bet is to think about that you haven't done and then go from there.
I want your opinion on this: Your good opinion, not the judgmental, rude, real one.
Go Ahead: Don't. No, truly, do not go ahead, don't collect a 100 and do not move forwards. Stay put and try not to do anything.
Do you think I should: The real question is do you think I think I should. Answer honestly, but remember it isn't necessarily your idea that is being requested.

A large part of bridging the language gap is to understand how much of what women say is the in emotion of the moment. Many men are more logic and problem solving based in their thinking, women feel what they think and while both come from a place of logic it can be a hard overlap to get the two languages together.
What are your most common questions about the language of women?