Answer:
You can ask for the next steps and contact information, write down anything you want to remember, and send a thank-you note to the hiring manager/interviewer.
Step-by-step explanation:
Writing a thank-you note/email (it feels more genuine when it's handwritten, though) shows just how interested you are in possibly receiving that job and that you appreciate that person for making that interview possible. You appear more confident and sure of yourself by doing so.