I highly recommend using "Secrets of the TEAS V". It's a large yellow-covered book that you can get on Amazon. I, too, had less than a month to study for my TEAS V, and this book was a HUGE part of my feeling prepared for the test. It breaks the four subjects down to smaller sections, AND (and this is major help!) they have a website where you can enter the code from your book and you can watch as many of their videos explaining further the content you just read in the book!! Extremely helpful!! Also, their practice tests (I think there are four free ones per subject) are helpful because the sections have the same number of questions as the actual test, so you get used to constant question after question in one topic for the set period of time. Now, I will say that I found some of their questions were easier than the test, BUT the content I learned from them definitely made a difference in my score! (I passed, btw, and am now a nursing school newbie!) Also, use a TEAS V prep app. Most are free, but if you have to pay a few $, it's worth it to get one that *gives the reasoning as to WHY the correct answer is the correct answer.*. That way, you can learn more and and be better prepared! :-) Good Luck!! :-)