I am a horrible test taker and really worried about the Hesi. I got the Elsevier Exam Review book and have been reading studying guides online. I am a 4th grade teacher so I am not too worried about the math or the comprehension. I am very worried about bio, chem and A&P. My question is how detailed are these sections? People say you just need to know the basics but there is SO much information in this study book and I dont know if I can memorize it in time. People online list topics that are in each section but I want to know how in depth they go.