The CDA Centre of Languages offers many languages for you to choose from. They teach French, German, Italian, Portuguese etc. They have three centers and are opening in Golpark and Baguihati in around two weeks! Courses for languages like French, German, Italian and Portuguese start at INR 12,525 {without tax}; and courses like Chinese, Japanese, Arabic and Dutch are slightly more expensive {INR 16,000}. These courses last about 3 months and you can choose to further your expertise in the language once the course is over.