If you want to become bank manager then follow this -
Prepare for IBPS or SBI Bank PO Exam.
After becoming Bank PO, you can give bank manger exam.
On your performance bases , you will get promoted as Bank manager.
The eligibility criteria to apply for Bank PO Exam is Graduation in any field from well known college or university.
Visit here for the complete information about the Bank exam - http://goo.gl/yDf7e4