- Get a passport. You never know when you may want to travel outside of the country (or leave the US in a hurry).
- Learn a foreign language. There are books, CDs, podcasts, community and college classes, foreign movies/radio stations/TV shows, and a variety of other ways to acquire a new language.
- Go to ethnic restaurants. This is a great way to learn about the food of different countries and meet people who work at the restaurant that are from other countries. It is best to find restaurants that natives of the country actually eat at (ie: if you go to an Asian restaurant and all of the diners are white, you may want to head to a more authentic place in the Chinatown of your nearest big city).
- Meet people from foreign countries. This may happen by volunteering to teach English to people new to our country, by hiring someone from a different country (many people hire Latinas to watch their kids and also teach them Spanish at the same time), or by chatting online with people from other countries.
- Get out and see the world. Many people go to Canada or England as a first trip out of the country so that they won't have to wrestle with a new language. Others make a quick day trip to Mexico to experience a new culture (a word of caution if you plan to do this--many places in Mexico are like a war zone these days). The point isn't where you go but that you go.
The bottom line is that being able to travel to a variety of countries, get along with the locals, solve problems that come up, learn something new, stretch your idea of what is "normal", and get yourself back home with a new appreciation for the world and the people living in it is a very valuable skill, not only in the traveler sense but in the prepared for anything sense. Also, the world is getting crazier by the day--there have been plenty of people contentedly living in their own little world when something radical happens like a war, coup, natural disaster, or other event that forces them to leave their country and start their lives over in a new country...this way you will be one step ahead should worse come to worse.