I would suggest that every college student do an internship. Obviously aim to work for a company that you can see yourself working for in the future, but no matter where you intern at you will definitely gain something. The internship I did this past summer was my 3rd internship, and I gained something different from each one. I never thought I'd end up wanting to work in the renewable energy industry, but after doing this internship, I definitely can see myself in this industry. My point is that you never know what you're really interested in, until you try it out!