Business Requirement for BW modelling in SAP Bw 7.5

Hello Folks,

I am posting for the first time.

Can somebody please help me with a Business requirement for BW 7.5 to implement/explore various BW modelling objects.

Info-object, datasources, extractors,transformations ( start, end, expert routines), adso, composite provider and at reporting level (BEx) too.

Basically i need business logic to get these objects in use.

Please invert if anything required for you too help.

Thanks in advance