Part Time

If you love Finance, you can do courses provided by BSE, NSE and others in Financial Markets, Foreign Trade, etc. Also, you can start trading yourself. If you love Marketing, you can do courses on Digital Marketing, Digital Media, learn Photoshop, etc. So, search about your interests, and you can google about the best courses provided in that area. But, remember always pursue courses from the best & reputated organizations. The brand value does matter a lot. I would recommend you to study a language along with the regular course that you will be / are doing. (This is an assumption that you are a Delhi University student).
The language courses are a part of the multiple course structure offered by University of Delhi, the application forms for which will be available soon in the respective colleges of which you have to keep a track. You start off with a basic certificate course, followed by a Diploma, advance Diploma, degree and post-graduation (optional).