I'm sorry you're going through this.

I don't mean to sound unkind, but are you doing your part studying your book? I ask this as a family member took a similar class that was mostly Power Point presentations so that was what she studied, and almost failed the class. She later admitted she hadn't done her part in studying the book.

If there are questions at the end of the chapters, make sure you can answer them. Generally if you can do that, you can pass the tests. I was told this back when I was in college, and it got me through some extremely tough classes.