First off, I think you're going down the right path by asking for advice early on. I know I didn't ask until much later in my career.
The first thing I usually suggest to people is to find ONE person with a job you think you might have. This might be someone high profile like my co-host Dave or it might be someone you just happen to know in the industry. From there, I usually start to trace backwards in their LinkedIn history (they don't have LinkedIn? Might be worthwhile choosing someone else to start with). Then I look at where else they have worked in getting to their current position, because it starts to give a feel for other types of companies that are out there in a similar field. You can start piecing together larger companies in the industry and what might be a good fit. Then I'll go search for engineers at those companies and look at their experience. It might be a bit limited on what you're able to see if you don't have a lot of connections on LinkedIn yet, but you can also pay to see more stuff. This also works to a limited extent with other job boards like Angel List. What you're really trying to do is get a feel for whats out there.
From there, you might find an engineer at a company that has a particularly interesting background. Sometimes it's worth it just to write to them, explain your situation and see if they wouldn't mind answering a question or two. It's very possible you'll get ignored by many of them. But if you keep trying I'm sure you'll find someone willing to write back or call you to talk about their experience. Since you're at Clemson, they probably have an alumni list as well that you could cross reference with some of the companies you identified in the industry. Having a shared interest like (your future) alma mater also increases the likelihood they'll take some time to talk to you. Always try to keep your request for their time to about 10 minutes or so. You should be prepared to only take 10 minutes, but they might want to keep talking or write you more in-depth answers.
When you do talk to them, ask them about their past, because this is going to be a good indication of what allowed them to be successful and what they were interested in. You can gauge what about their past was interesting besides their choice of employer. You want to learn about the skills you need to have to eventually get where they are, but also places that will help you to cultivate those skills. Each young engineer I talk to I encourage to focus on skill building. That is the capital you can use throughout your career. The more base skills you can develop before being asked to specialize, the better.
Finally, no matter whom you talk to, follow up and show gratitude. I was always sure to not only tell them thank you for their time, but tried to write back later and keep in contact. They spent some time helping you, so even in the smallest way they are invested in your success.
This is my Networking 101 lesson. If you do these things, I think you'll start to get a much better picture of the industry.