A level English language and literature Handmaids tale help!!

I’m really struggling with The Handmaid’s Tale because our teacher barely covered any of the chapters, and I feel completely unprepared for the exam in just 20 days. She hasn’t taught us the content properly, and I’m worried that she’s going to put something ridiculous on the exam paper. It’s honestly so harsh, and I just don’t feel ready at all. Can anyone offer advice on how to quickly catch up or resources to focus on? I’m doing A level english Language and Literature, so I need some solid revision strategies. Any help would be much appreciated!
Any exam style questions and key scene would be helpful.