DuolingoYou can find Duolingo in the Chrome Webstore. Its an app that allows you to learn French, German, Spanish, Portuguese and Italian from scratch. I've been learning German. My eldest son uses it at home to help with French and German and really likes it. For a free course its a seems really good.
I never liked languages at school - but this makes it rather good fun! You need a decent headset to get the most out of it.