The foreign language courses by the Foreign Service Institute (FSI) have had a reputation for many years as a good home study course which enables one to gain fluency in a foreign language in a short period of time. At the same time, the courses have also been quite expensive. However, many FSI courses are now in the public domain and are offered online for free. The textbook comes in PDF format and the audio tapes as mp3 downloads. The courses are offered in a huge variety of foreign languages, including such obscure ones as Igbo, Twi, and Kirundi. The more commonly studied languages are also on offer. Basic Spanish is offered in volumes 1 through 3 with both the audio files and the textbooks, along with the textbook for volume 4. Chinese is offered in the form of "modules" consisting of a textbook, a workbook, and the audio files. The modules are organized into various subject areas, such as money, transportation, arranging a meeting, and living in China. As many people are considering learning Chinese, but find it intimidating because the Chinese writing system is very different from the English one, these courses are a good way to try Chinese without risking money on it. If you're considering learning a foreign language, you can find the courses at fsi-language-courses.org.