Chemistry

When I was in high school, chemistry was one of my favorite subjects (the other is biology). In this semester, I have my first chemistry class in the university life, and to tell the truth, I was pretty upset to the class. I used to love chemistry a lot, but now I feel that there is no power and reason pushing me to love chemitry again. The class is quite boring and the teacher always repeat the contex in his ppt. And now we have to face the exams but I have no idea what he has taught us. Oh come on, can anyone help me to pass the test safely?