I just happened to be on the British newspaper The Guardian reading about multilingual comedian Eddie Izzard when I saw this reference to an article on learning a language on the cheap. Although it's written for a British audience, much of the content can be applied elsewhere.
New language acquisition can be time-consuming and expensive, but I think that because of electronics and globalization this is the best time in history to learn another language. Take a look at their variety of money-saving tips here.