Hi Krishnan,
1. SAP would have a big push on SAP Banking in the future.
2. You should first go for initially Transactional banking then later go for Analytical banking. In my opinion, you should not limit yourself to a single module.
3. Please tune yourself to
training.sap.com
4. I am not sure if SAP is giving training for these courses in India. Please not go to local institutes for these niche course. You should enquire with SAP if they are going to schedule any training for these courses. Personally, I would choose SAP for this type of courses, even if they are expensive.
Hope this helps you.
Kind Regards,
Ravi