Help needed for Demand Planning Cube of APO

Hi All,

I have some experience in SAP BW, however I am totally new to APO. I have a requirement to "Deliver the dataflow from OTC data models for Billing and Sales history for Demand Planning cube in APO".

Can you please give me step by step approach in how to go about this particular requirement with OTC and APO. Or redirect me to a step by step document which cover this functional area. Need help urgently, thanks a lot.