Hey Ashwin

Getting a degree in BBA and Mechatronics was a good decision. If you like you can also study economics  from distance education or on any MOOC like NPTEL which will add to your knowledge. However this is all for the education part. To start a small company you would need several certificates like Agreement between Independent Contractor and Service Provider certificate,Appointment Letter for startup, Consultancy Agreement,Contractor Agreement,Employee Offer Letter,Employment Contract,Founders’ Agreement,Freelance Contractor,Hiring Employees and Processing Payrolls in Startups certificate,Letter of Intent etc So you will have to keep all this in mind.