Hi There. I used the HESI A2 as my study guide for all sections as well as the pocket prep. I thought the hesi book was more on topic then the pocket prep. I took the HESI twice once on 1/3/18 and the second was 2/13/18. I though the vocab was about the same as the first time around and like I said mt guide was mostly the HESI guide. Take your time and you will do fine.