I bought the hesi book from the school and the test was honestly just like the book, same format of questions and similar wording. I didn't feel as though I got threw for a loop or mislead . They sell the book at the school for $30 its worth it. Secondly the test is split into section. Math and then reading,grammar,vocab yo have to score 80% in math and then 80% combined in the other 3. For the math practice the problems in the book. They provide a calculator so it's not that bad but you need to know how to solve the problems. It was a lot of fractions, ratios ,some conversions kilometer , meters centimeter to inches stuff like that. I scored 96% on the math because that's what I actually put most my focus into , I did the practice problems over and over and over . Memorized conversions in the book . Reading you have to read a passage and answer questions. Pretty simple Vocab is vocab study all the words in the book until you memorize them that's what I did. You need to know meanings. There was some words on the test that wasn't in the book but I just took a wild guess . Just buy the book you can't go wrong! Practice makes perfect. Dedicate the time and you will do great . Good luck