You're welcome.
As for languages, there are of course Arabic and Tamazight (Berber) that are considered as official and national.
French is also used, and even in some official papers. However, it's being removed totally lately. Especially that lot of people are disliking totally the language to the point of rejecting it.
Back to Arabic and Berber. They are not used commonly in their classical/ standard forms. The vernacular is actually "darja" (also known as the maghrebi Arabic) and the different Berber variants. However, I should also point, that some do not consider darja as "Arabic". It is surely influenced by the language, but it's not derived from it. I agree more with this opinion.
Also, besides this, there is a minority language (unfortunately!) called Korandje. I was aware of it just a year, or so, ago. But I still do not know any word from it.