SIL International serves language communities worldwide through research, translation, training and materials development. Their training includes linguistics, literacy and multilingual education, anthropology, translation, and language and culture.
The Institute of Strategic Languages and Cultures offers one-year intensive courses in Russian, Chinese, and Arabic. Students study not only the language, but also history and culture.
BOOKS ON LANGUAGE ACQUISITION:
Language Acquisition Made Practical by E. Thomas Brewster and Elizabeth S. Brewster
Fluent Forever: How to Learn Any Language Fast and Never Forget It by Gabriel Wyner