This set of notecards contains all different questions regarding different units. I advise using the quizzing ability to test yourself in all the questions.

CrashCource is always the way to go when you need a video lesson in different topics. They provide very detailed insight into each sections and units. I advise you check out the topics you are confused about.

What better way to prepare for the AP test then the resources from Advanced Placement itself? The AP video reviews breakdown each specifics within the area of biology that they test. They also touch bases on different types of questions and FRQ so I recommend checking it out.