I'm getting back into Indonesian again because I'll be going up there again soon. I did it at Uni for 4 years and have picked up a lot when I've been there. I just use the books I have from before but I also use Google translate a lot just to look stuff up quickly. If you already know the grammar and pronunciation it's a good way of doing it.
I did French at school but that was a long time ago. I have a friend that lives in Paris now so I might visit her one day and try to practice - it's a lovely language. Would also like to learn a few words of Thai - I can see myself spending more time up there as I get older.