advice on how to prepare for the Bio subject test?

<p>hello! i am a rising senior and planning on taking the bio subject test (i haven't decided between molecular and ecological yet). honestly, the last time i took a bio class was in 9th grade, and i will take bio AP in senior year, so i kinda forgot a lot of stuff... :/ i'm planning on taking the bio subject test in october this year, and i just wanted some advice on what books to study with... and also, which one is generally easier: molecular or ecological?
please respond ASAP! thanks!!! :)</p>