If you want to explore different internships, this is great news! Although some internships are hard to come by as a high school student (many internships are saved for undergraduate or graduate students) there are still some out there! 

If you are not looking for an internship but still looking to explore different career interests, job shadowing may be right for you! Job shadowing is typically a week-long experience where you follow around a supervisor and see firsthand what the field is like! 

Here is a great link that talks about job shadowing and how to get placed.