You can go for MBA- IT, Finance, Operations, E-Commerce.

You should have cleared any one entrance test (such as CAT/MAT/XAT/NMAT/CMAT/GMAT/

NEST ) accepted by various colleges and you should also have minimum of 45% to 55% in your bachelors(any stream) for admission in the same. Admission in MBA is done via two modes- either through an entrance exam or direct admission which is based on merit basis or management quota basis.

MBA Specialization, which are as follows:Oil and Gas Management 
Hospital and Healthcare Management, 
Supply Chain and Logistics, 
Tourism and Hospitality, 
Financial Markets, 
Finance, 
Marketing, 
Human Resources, 
Business ,Operations, 
Information Technology, 
Retail Management, 
Strategy, 
Entrepreneurship, 
Business Analytics, 
E-Commerce, 
Banking and Financial Services, 
Agri - Business Management.

Some good institutes are :IIMs

Xavier's Labour Relations Institute, Jamshedpur

Indian School of Business ,Hyderabad,

Lovely Professional University, Punjab

K.J. Somaiya Institute of Management Studies and Research Mumba

Lal Bahadur Shastri Institute of Management Delhi

Management Development Institute (MDI), Gurgaon

Narsee Monjee Institute of Management Studies, Mumbai

National Institute of Industrial Engineering , Mumbai

Faculty of Management Studies , Delhi

ICFAI Business School, Hyderabad

Jamnalal Bajaj Institute of Management Studies, Mumbai

You'll need to prepare well. First step is to appear for CAT, XAT, MAT, SNAP, NMAT, IIFT, TISS entrance exams, etc. After declaration of results or even before foe a couple of institutes, you'll have to register by paying. Post that in case you get shortlisted, you'll receive a call/mail. Then there are 3 rounds usually: Group Discussion, Wriing Ability & Personal Interview (different combination for different colleges). If you clear all these rounds, you'll receive an admission letter by mail from the college. Selection also depends on a coupe of criteria: entrance exam score, work experience, academic scores, educational background, personal & professional achievements, extracurriculars, etc.