B.Com

Hi,
Kindly, go through this link, I hope it helps, being a commerce graduate, I suggest that you opt for an MBA instead of an M.Com, as MBA has more value than M.Com.
Wish you luck.

Hi Khush Gupta,
All specializations under MBA program got almost equal opportunities. It depends upon your interest which specialization you want to pursue.
All the best.

Dear Khushi,
All management entrance exams like CAT, MAT, CMAT, XAT etc. more or less similar. Therefore, you can prepare English, general knowledge, etc. There are lot of books available in the market. For quantitative techniques, RS Agarwal is one of the best.
All the best.

Sikkim Manipal University is quite reputed, and so is Symbiosis. You place will not matter in case of distance education, if that institute has a learning center branch in your city.

There is no criteria of minimum marks in mathematics for B.Com and BBA in majority of the universities in India. You can look at detailed eligibility criterion at website of universities or institutes, which you are targeting for further education.

You can join coaching institutes like TIME, CPLC, CATking or IMS. You will need guidance for exam preparation, which they will provide.