hello aspirant

to become IPS officer you need to attempt UPSE CSE examination .in order to write the examination the least qualification is least graduation certificate of any education course either MPC,BIPC ,MEC ,CEC,MBIPC.

you need to study the syllabus provided by the UPSE CSE and need to write the examination and try to obtain a good mark in order to fetch you the IPS pst .you need to have greater knowledge in general knowledge and current affairs.

Hii Siva!
The best way to study depends on you, as it varies from person to person. You can either join civil coaching classes and prepare for UPSC, or you can take admissions in any of the graduation courses of your choice and self prepare for UPSC at home. The eligibility for becoming an IPS states that you need to have a graduate degree with any subject from a recognised university. Your age should be between 21 to 30 years of age. So, you decide the way, you feel comfortable to prepare for it.
Hope this helps.
Good luck!