Start with one line per internship. Record the employer, program, location, and deadline. Keep the link or a saved copy of the posting beside your notes.
Make a second list for documents and requirements. Track which resume version you sent, whether references are needed, and what is still outstanding. Before each interview, write down one question about the team and one about what you would work on.
The GGC Studios Internship Search Kit includes a shortlist, requirements tracker, and interview follow-up sheet. https://payhip.com/b/SHXZA