Passing the CAEC (what should I study?)

Hi yall!
This December as soon as I turn 18, I want to try to pass the CAEC and am currently trying to study for it. I’m not exactly sure what I’m doing so does anyone have any tips on what I should study exactly?

I’m homeschooled if that puts it into perspective a bit- I’m currently doing algebra, writing practice essays, using YouTube for other educational stuff like history and I use Kahn academy for math and science.