Hello Bille Nunkesh,
Firstly, if your fundamentals are not strong enough then it would create problem for you in college as well as CA. I would suggest you to first strengthen your weak areas in accounts by going through 11th & 12th class books using youtube channel. And once you are done with this you will not have much problem with your college as well as CA course.
I am suggesting this to you because I am also a commerce graduate and knows how important accounts is.
I am suggesting book for it refer to it and find it solution google. Refer to T.S Grewal for both 11th & 12th.

If still you have any doubt, feel free to mention it in comment.

All the best !!