Paid summer marketing internship in metro Detroit?

I am a high school junior about to be a senior and I am interested in a paid summer internship. Mainly I would like for it to be business related specifically marketing or advertising, but I am really up for any sort of office job. Not so much directly serving people. Where should I look for a 1) part time 2) summer only 3) paid internship 4) office job 5) for a high school junior? Thank you for any help you can offer!!