Hey,

Bachelor of Business Administration or BBA is a 3-year professional undergraduate course in Business Management, the minimum eligibility for which is class 12th from a recognized educational board with minimum score of 50%.The course is divided into six semesters andcomprises variants like BMS, BBM and BBS. It can also be pursued through Correspondence/ Distant learning modes and admisison to the same is based on entrance tests carried out by different colleges and universities.

Some such entrance tests conducted by respective universities for admission into BBA course are:
DU JAT
IPU-CET
 SET
AIMA
UGAT

The average tuition fee charged for the course in india ranges between INR 1 lakh to 2.5 lacs.
Some of the top institutes which provide admission to candidates into the 3-year program are as follows:

Indian Institute of Management (IIM), Indore
Christ University, Bangalore
University of Delhi
NMIMS University, Mumbai
Symbiosis International University
Guru Gobind Singh Indraprastha University, Delhi
Sikkim Manipal University

Admission to the course is generally entrance exam based.The entrance tests are organized at national, state or university level by various authorities. A merit list is prepared on the basis of qualifying examination or entrance examination.

 Hope this helps.