I agree with Sarah - friends of friends/family/current coworkers is the best way to go, as they can introduce you! Reach out to your professors, family, friends on LinkedIn or social media and let them know that you are interested in an internship in X field. People love to help!
Something else that wouldn't hurt is to reach out to people in industries or companies that you're interested in on LinkedIn that are from your hometown or went to your same high school. I've received lots of cold e-mails from people that went to the same college as me asking for an informational interview to learn more about what my job is like. If I like them, I even refer them for internships or positions!
Claire recommends the following next steps:
- Reach out to teachers, family, and friends and let them know you're looking for an internship
- Reach out to people that you have some connection with on LinkedIn (such as the same high school) and ask if they'd be willing to get coffee or chat on the phone with you