Hello,
BCA is bachalor of computer science course. This is there years degree course. In this course you have to study about the database, networking, data structure, programming languages like c, c++ etc. So it's basically upto computer application related course.
After completing your 12th class you can join this course dear. But the minimum marks of 12th is 50% and english and mathematics are mandatory otherwise you can face problems in Subjects. But some arts students also get join BCA i.e. BBA in BCA. Anyhow in West Bengal so many colleges are offered for this course. And the entrance conduct via merit basis of 12th result. Generally no entrance examination occur. The colleges are
I'll provide you a link below you can check it for more details about the college
https://it.careers360.com/colleges/list-of-bca-colleges-in-west-bengal
All the best.
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