Hello

You can check out the courses provided for NPTEL for business studies (on the SWAYAM platform). You can go for Digital Marketting Course (probably the best course if you are doing BTech in CSE or if you know webpage development and app development). Other than this you can also do a course on Human Resource Management or Operations managemnet (best for BTech IT students).

You can also opt for Project Management course, technology management is also a good option (provided by Don Bosco University Global).

Remember, you can opt for these courses online for credit scores that you can transfer to your institute CGP but do not try to get a degree in any of these online at the same time as you are doig BTech because

• It will be impossible to balance  both
• One of the degrees will be nullified as at one time you can only do one degree (like you canot do both BSc and BEd at the same time, you have to do one after the other).