Generally to understand a specific SAP functionality , first I refer to help.sap (where the information is too limited ) and then try to find out OSS relevant to that functionality to understand the details of it ( like tables being referred or what could be the special / expectional cases and how this functionality will work in those cases).
But generally finding OSS and put them in a logical sequence is time consuming process and sometimes you loose your interest. Since it is also not possible to find all relevant OSS in one go as every OSS is referring to some more OSSes.
Therefore I am looking documents where it starts with basic understanding and further covers all OSS ( specific / exceptional cases).
Is there any place on service.sap or any other site where i can get such details documents ?
Pls dont laugh at me
You can get the detail of the functionality in SAP system only.
You goto transaction SPRO->img guide->goto the require node .
from the menu Implementation Guide ..click the print option create a spool request. now u can save the document on your desktop.
The document will contain step by step functionality for the particular module.