B.Ed

Validity of a degree depends on its recognition. If it is awarded by a recognised university, it is definitely valid.

You need to have passed graduation and can directly apply to the college.
Please refer to the website for further details: http://www.rkdf.ac.in/.

The admissions will start in the month of May. Please keep a track of the official website for details.

The fees for MDU is 48000/- per year and for IPU its around 55,500 per year.

You can refer to the NCERT books and previous year question papers of RIE.

During your registration process, you can easily select the course you want to pursue. After you log in to your microsite account, you will be able to see the courses you have elected. During the selection of your course, there will be an option for integrated courses. You will definitely find your desired course in that section.

Yes, you can apply for that.

Yes, you can apply for B.Ed. The eligibility is to have completed graduation/ post-graduation from a recognized university with minimum 50% marks (47.5% for SC/ ST/ Blind/ Physically Handicapped candidate) or must have completed BE/ B.Tech from a recognized university with minimum 55% marks (52.25% for SC/ ST/ Blind/ Physically Handicapped candidate).
The final admission is based on the marks obtained in graduation.

Please refer to the link provided below where you should be able to download the college brochure which contains important details like eligibility for this course, admission guidelines, etc.
https://www.shiksha.com/teaching-education/course/b-ed-acharya-jagadish-chandra-bose-college-a-j-c-bose-road-kolkata-212243

You have to clear TET exam to teach in any of the government schools. TET is teachers eligibility test which should be cleared in other to get a job.