I see you've already received some great responses to your question from Amy and Tina. And I strongly agree with Tina about speaking with a professional editor. Have you tried speaking with a counselor in the Career Development office at your college? That person might be able to connect you to an alum who is, or has been, an editor. Similarly, your academic instructors who have published might be willing to give you the names of their editors so you could connect them for a brief conversation about the industry.
Have you looked on the US Bureau of Labor Statistics website? The information in the Occupational Outlook Handbook for Editors there is very interesting and may help answer some of your questions.
I wish you the best of luck in your final year of college!