Hi Srinivas,
This is discussed many times in community network. you please search it or related discussions on SCN.
Even though in short we need to know about basics of material planning and production execution of the Plant/Organization where we are going to implement SAP PP module.
You can refer below threads which are previous discussions on SCN for your understanding.
Sequence of Implementation in PP Module
Steps to be followed in SAP-PP module
Complete Customising step to implement SAP PP module for New client.
Regards,
Naresh