An amazing amount of information and tools are being made available for general access on the Net. It is meant to reach a wide audience but this is unlikely to happen till more people get net savvy. They are reaching out to people who'd be interested. I know I'm a candidate. I've been very keen on learning Mandarin and French. Unlikely to happen in the near future but I'm saving up the information. If any of you choose to try it out, do let me know how you fare.
If you like a conversational and situational type of teaching, download a bunch of audio files and get going. You'll be speaking Mandarin or Spanish in no time.
Chinese PodSpanish SenseThis site believes in repetition and rote and you need to have access to the net to use it but you have 8 or more languages to choose from.
MangoBBC uses multimedia to teach you that basics of a few languages.
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