Someone has bought " Business Planning and Consolidation with SAP: Business User Guide"

My question is, it is worth bought " Business Planning and Consolidation with SAP: Business User Guide" the SAP PRESS.

If someone has compared it, can tell me, if it is worth buy it, i have buyed other books and I have been see and the books just has the concept, but this book said has "Step by step", like set up the business rules, consolidation, exchanges rates, etc.

Regars,