Hi Sudhakar,
it is good that you are looking into SAP career.In SAP career being a gradute also you can get a job ,Btech is not a mandatory at all now a days.
Using you currecnt expereince you can search jobs and post your resume on job search site also.
Yes as per your logistics experience your friends are suggesting correctly that SAP MM is best suites you.
All the best.
Thanks,
suru