Hello! As of yesterday, Aug 31 2016, the new TEAS6 version is what you will be tested on. If you visit atitesting.com, you can obtain the paperback book, and have access to two online practice tests. I took the new teas test today... Here is what I found.... Buy the book directly from ATI. I also purchased additional help books, I did not even open them.... You CAN use a calculator on the test!! Woohoo!!! It is a built in calculator you click on IN the test. Know A&P well, know cell function well and what ALL cells have/missing. The practice test A was most like the actual teas. practice test B messed with my head so bad I thought I would do poorly on the teas. I walked away with an 80.7 and I'm good with that. Study study study the science section. Know atoms, electrons, proton, neutrons, quarks?? (What the heck is a quark?!?!?) know which is the lightest, etc. I really hope this helps anyone getting ready for the new test! Also, if you are familiar with the teas5, the teas6 book is WAY BETTER, WAY SMALLER, more straight to the point. PS) there are some errors in the new book so email ATI and ask for the corrections page. They will get it to you fast :)