LiveMocha is a website which is in beta and might prove helpful for missionaries trying to learn a new language.
From their front page:
The social way to learn a language.
Community. Livemocha is the first-of-its-kind online language-learning community.
Lessons. Fun and interactive lessons that move at the right pace for you.
Motivation. Track your progress and reach your goals with Livemocha tools.
The site currently offers courses in German, English, Spanish, French, Hindi, and Chinese.
Thanks to 901am for the heads-up!

I believe that the internet provides today's church with a historic opportunity .... to tell the old, old story of Jesus and His love in ways which could only have been imagined in times past. The objective of this website is to explore the various ways in which today's technology can be used to spread the gospel around the world.
