Know the company, how long they have been operating, and who your supervisor will be. Make sure you plan out your transportation plans ahead of time so you ensure you are on time for your interview appointment.
Dress a little more formally than the position you are applying for, but no need to be formal. Make sure you speak about your personal interests and what you like to do in your time oﬀ. This will ease nervousness and lets your boss get to know you as a person
Always write an e-mail note, or even a handwritten thank you to the people that took the time to meet with you. Add in something that you took away from your conversation and how you are looking forward to the next step