Heading into Summer Employment

Nervous would not explain the emotions building up. Why? On the first of June, I will be starting my first Co op with Johnson&Johnson. I have been going to school to get my BS in Accounting. Now, that I am getting the opportunity I am getting second thoughts. What will I be doing? Will I be able to make a good impression. This blog is for people who may be experiencing this kind of worry. I am looking for advice and to share advice if possible.