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.
The Nightbus is an extremely valuable service run for students by DSU. It is available on a call out service basis. The running times are available on page 31 of the handbook and will be displayed around college, in the bar and you can ask for a small one for your wallet from Kate Newton (Welfare Campaigns Officer). The bus runs a circuit around all the colleges, the union, the libraries, the viaduct and Gilesgate (livers out areas) from around 9pm ‘til 3am, and it only costs a donation of 75p to travel to any of its stops. Priority goes to lone travellers. If you are going somewhere alone at night be safe and use the Nightbus.