Colleges in Sagar

Both are best at their place but Dayanand Sagar fee structure is high as compared to BIT but BIT has a good reputation and high placement. You can opt one of them accordingly your fee you can invest.

The applications will begin tentatively in the month of June. Exact date has not been announced yet.

Yes, you can go for B.Ed through IGNOU.

Interested candidates can apply online with required information. The admission is based on the marks obtained in 10+2 Examination. Website: http://www.svnuniversity.co.in

Swami Vivekananda does not offer BA course. I don't think so that they have a center in Kolkata.
I would suggest you to contact the college to verify the same.
Here is the link: https://www.svnuniversity.co.in/mainsite/contacts.aspx

Yes, it is a good college. It is affordable, as the college fees is only INR 2.00 lacs for the entire course, and the average pay package is INR 3.00 lacs, hence return on investment is good. A minimum of 50% marks is required in graduation, and entrance exams need to be cleared. Thanks and all the best.