M.Com

Hi Ankush, You have not mentioned whether you want to teach at the college or the school level. If you wish to teach at the school level, you can start exploring B.Ed courses and preparing for entrance exams. Alternatively, if you want to teach at the undergraduate level, you can prepare for NET (national eligibility test). Details are at www.ugc.ac.in/inside/scope.html. Other possible options for you are:
1) There can be a possibility that at some point of time you have to or you would like to work in a foreign country, so you can devote your time in preparing for IELTS. It is the International English Language Testing System. It measures ability to communicate in English across all four language skills listening, reading, writing and speaking for people who intend to study or work where English is the language of communication. There are many coaching centers for IELTS. This will both prepare you to apply abroad if needed and prepare you to teach IELTS courses in the future as a possible work option.
2) You can also do tuitions, teaching B.Com (H) will not only strengthen your base in the subject but also help you gain experience for becoming a teacher or lecturer.
3) You can go for a good computer course from a reputed institute like NIIT, as these days learning computer is a necessity for any work including teaching and it also adds a star in your CV. All the best.