[Retrofitted]

I use Duolingo for Spanish and Navajo and it works very well (after three months, about ten minutes a day, I was able to navigate Mexican shops and restaurants easily).

To get the most out of Duolingo, there are podcasts, videos, and the like that supplement the grammar and vocabulary lessons. Be sure to take advantage of those if you go the Duolingo route -- they really make learning easier (and get you that much-needed "ear" for the language). Good luck!

[dfwgator]

Just beware, in the Duolingo stories, they like using a lot of same-sex couples as protaganists.