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http://www.lernu.net/ - http://www.lernu.net/
Presentation of the language in multiple languages and direct communication with Esperanto speakers from countries all over the world. Features include a built-in dictionary, multimedia courses at various skill levels, and objective examinations. |
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http://www.esperanto.org/gerda/ - http://www.esperanto.org/gerda/
An advanced free email course in Esperanto. Accompanying wordlists are available for speakers of English, German, French, Italian, Dutch, Portuguese and many other languages. |
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Esperanto HyperCourse - http://wwwtios.cs.utwente.nl/esperanto/hypercourse/
Based on the HyperCard Esperanto course. For English speakers. |
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Australian Esperanto Summer School - http://aesk.esperanto.org.au/
An intensive Esperanto School that takes place yearly in Australia, for those who want to fast-track their learning. |
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A Key to Inter-National Language Esperanto - http://www.esperanto-chicago.org/key.htm
Concise user-friendly grammar guide by R. Kent Jones and Christopher M.A. Zervic. |