studying problem

I have a studying problem. I can’t do it for the life of me. Its time for Midterms and as I prepare to study and do better now then I did on my first test I realize I cant do it. When I sit down with my book and start to work out math problems or read over chemistry definitions I realize that I do not comprehend anything. Throughout high school I was never challenged therefor I never studied and that is why I think I have his problem. I do not know proper studying techniques to secede in a college environment. When I go to study my mind wonders very quickly because the information presented is useless. While professors might get off on how math or chemistry equations workout I don’t. I think of what I rather be reading about or what I could be doing. Because of this my grades will probably suffer but oh well I don’t want to be in the class in the first place. If I can just skip these general requirement classes will be happy.