Advice
Constantly ask for advice and update your site Supervisor on what you are working on/thinking. They might not always have a lot of time, but they get a better sense of you, your thoughts, and your effort if you communicate clearly. Constant communication can also lead you down conversational pathways that may be very illuminating (in several fields like the site's history, government policy, special and daily procedures, and professional information), but also very helpful for both the staff and yourself.