Hey.

Yes,  you can study law after you've completed graduation in any field. After BBA you can go for a 3 year Law degree. Admission to most colleges is through entrances. Eligibity criteria requires you to score a minimum aggregate of atleast 45-55% marks in graduation degree according to the entrance/ institute.



Here is a list of law entrances for 3 year LLB course



- DU LLB - Delhi University



MH CET- GLC mumbai, ILS Pune and other colleges in Maharashtra



SLAT- Symbiosis Law school



PU LLB- Panjab University, Chandigarh



LSAT- Jindal global Law school, IIT Kharagpur and other private law colleges



BHU LLB- Banaras Hindu University



BVP LLB- Bharatiya Vidyapeeth



TS LAWCET Etc



Best of luck!

Ofcourse yes!! You can join 3 years LLB course in some good college like DU, BHU or even other colleges.