Hi,

I believe you have taken Computer Science and Engineering with specialization in Artificial Intelligence.

In B.Tech, even though you have narrowed down to Artificial Intelligence, most of the times the specialization specific courses are only taken up in the second half of your 2nd year or 3rd year of your college.

In the first year, the courses for all the students of B.Tech are almost the same.

And there are no specific chapters in your 12th Grade that you have to be perfect with, in order to do well in college. Although, if you have taken up Computer Science by any change in your 12th class; it would be helpful to brush up those skills. This will be useful as you will be starting to learn various programming languages.

You can also take online courses from Udemy and Coursera to get a head start.

Hope this helps, All the Best!