I just took the TEAS on friday, I recommend NOT buying the Kaplan TEAS book, many answers were wrong (which I ignored on Amazon reviews but it was true) try mometrix as they have many online resources as well. Allow at least one month for studying if you are unprepared. For reading it's pretty basic, english same. Math you must know algebra, geometry there were a lot of fraction questions, for science you MUST have taken a&p and learned ALL the systems, (1 & 2) and you also need to know basic chemistry. Also, practice your timing, I say take a practice (full-length) exam at least twice.