M.Com

https://www.shiksha.com/accounting-commerce/accounting/exams/icwai-exam
There are different level of eligibility for different levels.

No you can't do M.Com and B.Ed same year. It will be not acceptable. Yes, but you can do dual degree of B.Ed plus M.Ed but that will take around 4-5 year. Good luck.

After completing your B.Com, you can apply for Bank PO exams. If you want to do Masters, then you can take admission for M.Com.

No, CLAT is an exam for National law university entrance.

No, you can do a certificate course only. Read "IGNOU COMMON PROSPECTUS" carefully (Simultaneous Registration clause).
All the best.

You can speak with the MDU officials if they can allow admission on the basis of a provisional degree/certificate. Most institutes accept a provisional degree in the absence of an actual degree.

Hi Manoj,
The fee structure for M.Com is Rs 8,800 per year. You can check the details by visiting this page. You can also download the brochure for further information https://www.shiksha.com/accounting-commerce/course/m-com-andhra-university-visakhapatnam-171080.

Hi,
Start by teaching as a freelancer or even as a volunteer. It helps to give you a head start for your career. Lot of online free resources give you agenda and tips to teach and plan your teaching. Do it for sample lessons. Watch Youtube videos to see how teachers communicate and conduct classes. It will give you a visible idea.

Minimum50% marks at thelevelofgraduation.Certain universities also admit students with a B.A. Economics (Hons.)degree.Students who have passed B.B.S., B.B.A., B.F.I.A. and B.B.E. with at least 60% marks can also apply.