For me personally, I bought the study packages on the ATI site with the practice tests and the Mometrix book too. The ATI book lacks a lot of information, but the practice tests are good. And I've just been going through my old A&P books and looking at Youtube videos this time around. I did good on the Reading and Math before, but I didn't do so well on the Science and English. So I'm just brushing up on those before retaking it.