First of all, hang in there, it will be worth it. Secondly, I wanted to mention that one thing that has significantly helped me is to use the online resources provided with your book. Most textbooks now either come with a cd or the first couple pages will have a website address for additional resources. It is another way to study the material and can help to drive home concepts you might struggle with. I know it has improved my grades and given me an alternative study option. Best of luck through this semester and onward.