Hi Sumit,

If you're preparing for CAT 19, I would suggest you to take coaching from anyone of these institutes as they make you practice all the important  questions  through handouts and once the syllabus is finished they give you both online and offline mock test and once you get clear with the entrance exams, they will help you in mock GD/PI.

Some of the institutes I would suggest you to join are T.I.M.E.S, Career Launcher, MBA guru. These are the best crash courses for MBA entrance exam.

And if you don't have time for offline coaching classes then I would suggest you to join BYJU's it's the best elearning preparation for MBA.

If you face any other issues do let us know.

Wish you good luck.