Busuu

I remember being on busuu.com way back when it was first created but I was far more interested in livemocha at the time. I've just signed-up again after around 1-2 years and I'm impressed by the changes. At first there was only 4 languages available : English, French, Spanish and German. However now both Italian and fortunately Portuguese is available.
The site offers courses whose units follow the European Common Framework for languages. In the framework A1 is a novice to the language whilst A2 is a high beginner. B1 is a low intermediate [probably where I currently see myself as being in French] whilst B2 is a high intermediate. C1 is basic fluency whilst at C2 you can consider yourself fluent. Busuu offers courses in all 6 languages from A1 upto B2.
You follow a series of units on topics which you would be required have knowledge on at the level your following. In A1 Portuguese you start off learning basic greetings before delving into topics such as food, clothing, weather and grammar such as the present continuous, comparative and superlative adjectives.
If you have some time, it would be beneficial to try it out.