Packing and travel advice:
Currency conversion - money exchanging:
Time and weather:
Health information about other countries:
Cell phones and electricity:
Travel advisories and warnings:
Driving permits:
Click this link to find a U.S. area's tourism office.
Some free language-learning sites are below.
Translator site:
If you are going on a trip, you will need international travel/medical insurance.
If you're traveling on your own, sites like SquareMouth and InsureMyTrip help you compare travel insurance prices.