ooo yes I highly recommend duolingo^ and memrise, for free apps to learn a language.
Quizlet can be useful for revision if you're currently learning a language.
I speak semi-fluent vietnamese to my parents at home.
I learnt italian in primary school, still remember quite a bit.

In year 7 - 9 I learnt mandarin, which can be quite useful

First year uni now and learning French as a breadth subject. Probably my favourite subject too haha. Really want to become fluent in it

Also using the free apps mentioned above to learn japanese for fun
And other than that.. just curse words in several different languages.
Would love to be fluent in the languages mentioned above.. + spanish/latin/greek