Since I had some previously experience, I relied mostly on the CISA QAE (online version). Started by completing the 1000 questions first. Then I went to improve knowledge on the weaker areas by using hemang doshi book. Not very often I went to the CISA review manual. Only to clarify topics which I was really not getting. I must have done the QAE some 4 times. Also bought pocketprep mobile app to try questions on the go. Lately, I’ve discovered certification station on Discord: https://discord.gg/certstation
