Hello aspirant ,
For pursuing your career in banks, you have to first fill the IBPS PO application form through their website. The application fees for general category is INR 850 and for OBC and SC/SD/PWBD category is INR 175 only.
After registration you have to start preparing for IBPS PO Prelims which will be held on October 19th and 20th of this year and after qualifying prelims , you have to start preparing for your mains.
For appearing in banking examination, you should have your graduation degree and you should not have less than 21 years of age and not more than 30 years of age.

For further information about IBPS PO , you can go through the link attached below.

https://competition.careers360.com/exams/ibps-po