Dear student ,
Bachelor of business administration or BBA is a 3 year professional undergraduate course in business management. Eligibility criteria for the course is minimum of 50% score from a recognised board.  The course is divided into 6 semesters and comprises variants like BMS,BBM & BBS.
BBA includes complete knowledge of leadership and management. Course can be pursued either full time of part time i.e. through correspondence or distance education, depending on one's preference.
This degree allows the candidates to enter into the field of Management and teaches them various aspects that are necessary for effective business management.
It gives you a platform for pursuing courses like MBA.
The course methodology involves training through practical experience in the form of case studies, projects,  presentations, industrial visits  and interaction with experts from the industry.  Hence, BBA graduates have an edge over other graduates and gets direct entry into the corporate world.

You can join the course by qualifying in the entrance exam conducted by the colleges. And also the marks you secure in your 10+2.