@ Alex, 20 questions don't count. Hmmmmm that's interesting something I was unaware of. Ms. Scorpio, the Hesi book is fine in my opinion for the math, reading, and english portions. Those sections are a piece of cake, really. However, get the ATI book because everyone is different. Also, there are two different ATI books out there I really don't know if they both have the same info, but I'm sure it does or similar. Ms. Scorpio, I didn't even attempt to look at the other sections of the McGraw book because I really needed to brush up on the science portion I didn't remember from high school. As far as the geology goes, I really don't remember about that but everything that I needed to know from the science portion I studied in the McGraw book. If others used the ATI book for the science and it helped them, I would love to know how because it wasn't even close in my opinion.