Computer Science

There will be certain colleges which will accept you inspite of your Commerce background. You should not take admission directly in B. Sc Computer Science, rather go for BCA. It's more relevant and most colleges will consider your application.

Please refer to the link provided below for details regarding JNU entrance test in 2018 for MA in geography.
https://www.shiksha.com/humanities-social-sciences/exams/jnuee

Hello Manisha,
You can think of appearing for civil services exam, can join armed forces, can do MBA. There are many more openings.

Hi Kriti,
Please explain what you mean by computer course from home, do you want to do online MOOC courses from Harvard?

Basically, Fee for M.Tech in CS branch is different in different collages.

Eligibility criteria: 10+2 passed from a recognized board (or equivalent).
Admission process: Depending upon the institute, it could be direct admission process or merit based admission process.
Further studies: Valid Diploma certificate holders may pursue relevant Bachelors Degree course. B.Sc. Degree can then be followed up with PG Degree or PG Diploma courses.

Yes. There are courses and schools for ethical hacking which can be pursued after your graduation.

Please refer to the link provided below for the list of colleges which accept admission in top B.Sc courses. Please download their brochure where important admission dates are mentioned. I am also populating a list of top entrance exams for B.Sc and their last date of application.
https://www.shiksha.com/science/colleges/b-sc-colleges-india
https://www.shiksha.com/science/articles/top-bsc-msc-entrance-exams-in-india-blogId-13484

The most feasible option I see for you is that after you complete your BCA and then you can do another 1-year course from an open university like IGNOU, which should complete your quota of 16 years. After that you can pursue an MS from a university in Canada.