There's a lot to learn about college and Durham in general but don't fear, if its important its on this page, handily organised into categories. Any current student can add to or update this information so that everyone can benefit from each others' experiences.
You will be advised on how to get this important card when you get to Durham, it is your library and DSU/NUS card and you will not get into the library or Union events if you do not have your card on you. You have been warned! It also has loads of helpful numbers on the back of it and lets you get student discount!