Japaneese Vs Chineese (or Indian maybe ?,) which would be more usefull.

[Parokki]

No courses at your university? Maybe some other organization holds courses where you live? If not, then I'd try googling.

Japanese has the big advantage that there are a crapload of awesome sites to learn it from, like this, this, and this.. There are probably some for Mandarin too, but I don't know any.