There are many websites to try to learn english by staying at home. But it does'nt always seem serious. Here are some examples you can easeily find on the web [],
You can also find online dictionaries.But they are known to not translate well.

I looked one particualry.[http://]. And I tested it with a particular attention. It seemed more serious than the others to me. First because it is more complete and also because there are less ad. There are several academics thems like grammar and vocabulary.
And there is a page called learn english by email which propose to send you an english lesson for free every week.

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