Clarity to Study on Technical Course in SAP

Hi,

I have done my SAP SD Certification and currently working as a SAP SD Consultant. Now i want to study some other Technical Module which is Most Demanded.Since I want to become as a Techno Functional consultant

Im planned to do ABAP. Since i have a Technical Background(MCA)

Kindly suggest me..

Thanks & Regards,

Rajkumar.C