guess what? I'm going to spend a month in Mexico city.
That's great! What are you going to do there?
I'm going to work in my company's office there. i'm a little worried, though. I've never been to Mexico before.
But you've met lots of people from Mexico, and you've taken Spanish lessons.
That's true. And I guess I've learned something about Mexican customs.
It sounds to me like you're ready to go.