I found that the best way to prepare for the sap certification exam was to use erpkite. All of the practice questions were formatted identically to the real test and I felt confident as I took it. I would suggest erpkite to everyone who is serious about sap exam tests because they really deliver results what it claims. I cant express how much stress-free I am. I am currently studying for the certified SAP consultant exam and credit all goes to erpkite staff for the constant support.