I could use some tips on how to pass my college exams.
What college do you attend?
The Art Institute of Virginia Beach. I am a new student, and an Art Major. 
Surely you have some experience being a student. High School must have given you some skills to prepare for tests. Unfortunately, I don't have any advice about studying art.
Yes, High School helped some, but college tests are more intense. Even though I am an art major, I still have to take required courses like history, biology etc. I just need some tips on how to organize my studies. This would be helpful.
If your history test requires alot of writing, a useful way to prepare is to write long form answers to the questions you think you will encounter. If you get a question you are not super prepared for, sometimes yo can dance around the question by writing coherently about things you do know. It is a form of BS but you will demonstrate some knowlege.
Great advice. Thank you. I also have to pass a math class and I have never been good at that subject. Any advice on how I could improve my math skills?
Perhaps you can find a tutor thru the school. Many times older students volunteer in this area. You may find it useful to get thru the Algebra or what ever is slowing you down.
Okay, I will try that. Another problem I am having is with stress. I get so stressed out and worried about my course load. Can you give me some helpful coping skills, please?
Probably the best advice I can give is exercise. Medium to advanced level biking, for example, gives alot of exercise, companionship and working on the bike can be a great hobby. Of course you shouldn't let it interfere with the studies.