OK aspiring missionaries, if you have interest in learning or improving your skills in Mandarin Chinese or in Spanish, these related sites may be of great value to you. Some content from each lesson (or nearly each) is free, and various subscriptions allow you to buy access to more content:

ChinesePod.com [chinesepod.com]

SpanishPod.com [spanishpod.com]

Pax Christi,
Irenaeus