There are many well marketed ways to learn languages. We all know about rosetta stone and powerglide. Both sound effective but are expensive and follow a certian debatable methodology.

Immersion and travel are preferred methods to learn languages.

I was just reading this site: http://saberingles.freeforums.org/where-are-you-from-t7-15.html#219 where there are links to several pages such as:

Utöka Ditt Engelska Ordförråd - Leer je Engelse Woordenschat -
英語のボキャブラリーを増やそう - เรียนรู้คำศ - 学习英语词汇 - 學習英語詞彙
(for those of you who need help: Swedish, Dutch, Japanese, Thai, Chinese, Taiwanese)

and in nice simple spanish:   aprendre vocabulario ingles