Start here: http://www.erpprep.com/sap-erp-certification/sap-project-system-ps This certification test verifies proven skills and fundamental knowledge in the area of SAP ERP Project Systems. It proves that the candidate has a good overall understanding within this consultant profile, and can apply this knowledge practically under guidance of an experienced consultant. Here is the list of topics that may be covered within this certification PLM210, PLM220 and PLM230. To ensure success, SAP recommends following readings Project Structures, Material, Cost & Budgets and Resources.