Hello Santhosh,
If you provide your education and career background we would be in better stage to give you good suggestion.
In my opinion if you have below criteria, you can go for SAP FICO course.
1. You should have accounting background education like B.Com, M.com, MBA, CA, CWA, etc..
2. You should have accounting experience.
Without having above skills also you can learn FICO module but thing is you need to put lot of efforts. Once course is over companys may not prefer to take you since you don't have any accounting background.
Please find below Blog for more details to become a good SAP FICO consultant.
How to transform yourself from a fresher to an expert SAP Consultant?
Kind Regards,
Prasad