Colleges have courses in a variety of languages. The instruction can range from traditional classes to immersion programs. Some offerings may be continuing education courses that are available to non-matriculated students. Call universities in your area to find what is available and how much the courses cost.
You can also find online language learning courses. These allow you to learn a language in your own time and at your own pace. Internet instruction is often free or inexpensive. Websites for the BBC and Livemocha (see Resources) offer extensive language classes. Another, more expensive option is to work with a tutor to take private language lessons. Check with educational institutions in your area to see if any instructors or advanced students offer personalized instruction.
A variety of audio language instruction options are available at a wide variety of prices. The best-known is the Rosetta Stone system, which is one of the priciest choices but also contains software-based lessons. Some libraries have language learning audios available for patrons. Check out several to see which works best for you.
Look for other people in your area who are interested in language learning and practice having a conversation. Actually using a language is one of the best ways to learn it. If you are a beginner, it's better if at least a few people in your conversation group are more advanced so they can correct mistakes and offer advice. A website such as Meetup (see Resources), which helps connect people with similar interests, can help you find language-learning enthusiasts in your region.
Once you have started to familiarize yourself with a language, a fun way to exercise your skills and learn more is to listen to it being used in foreign-language movies and on the radio. Look for a library with a large selection of foreign-language films that you can rent for free. Find ones with subtitles you can turn on and off. Watch without the subtitles and see if you can follow along. You can turn on the subtitles to see if you understood the dialogue. Search the Web for radio links to foreign-language broadcasts. Listen and find out if you are able to follow the gist of the program.