Hello

Well it's totally depend upon you that in which field you have interest. There are multiple languages and courses which can you pursue to improve your cv while doing bca. But don't miss the basics. First clear levels of C and C++ then you can learn

• HTML & CSS
• JAVA
• JAVA SCRIPT
• JQUERY
• PYTHON
• SQL (don't miss this)
• C#
• RUBY/RAILS
• PHP

You can also pursue micro master courses on the big data. Big data is also in demand now days.

You can take help of online learning as their are various websites which are made for learning the languages.

Hope this helps you

All the best.

Hello Dhanush Ragav , There are many courses that can be done along with BCA but some important courses of BCA which must be done ones byself are:

1. Data structure and algorithm

2.Object oriented Programming (OOP)

3. DataBase

4. Netwoking

5. Operating system

May be that's helpful for you :)