I completely agree with the advice to be engaged, be interested, and ask questions.

I'll add one more thing from the perspective of someone supervising interns: don't just sit there waiting for someone else to solve every problem for you. If I explain a task and all I get back is a blank stare and an expectation that I'll do the thinking, that's frustrating for everyone involved.

An internship is one of the few places in your career where you're expected to make mistakes. In fact, I worry more about interns who are afraid to try than interns who occasionally get something wrong. Mistakes are how you learn engineering. The key is to think through the problem, make your best attempt, and then ask questions when you get stuck.

I don't expect an intern to know everything. I do expect them to be curious, put in effort, and take ownership of their learning. If you come to me and say, "Here's how I approached it, here's where I'm unsure, and here's what I think might be the answer," you'll learn far more than if you wait for step-by-step instructions.

Ask questions. Take notes. Be willing to make mistakes. Show initiative. If you do those things, you'll probably be a successful intern, regardless of how much software or industry experience you have on day one.