LinkedIn is the social media site for professionals to network and connect. Be sure to Join LinkedIn, write a strong bio and begin building your professional network. See website at https://www.linkedin.com/
You can use this site to search for jobs on their job board and internships are listed on this site. See screen shot below.
Your instructor should encourage you to create a Linkedin profile and help you with establishing your network.
Here is an excellent document from a career coaching site on working with Linkedin.