Check the notice boards in the lobby of Gatehouse Court, in the archway between O and P staircases and in the Central Building, for further information which may concern you directly.
Email is the principal means of communication so check your @cam inbox regularly. Contact the IT Department urgently if you have difficulties accessing your emails. You are likely to receive a large number of messages of greater or lesser significance, especially in the first week or two.
You will need to prioritise efficiently and must act immediately on messages from your: Director of Studies, Tutor, Supervisors, Department or Faculty; and from College Officers such as the Senior Tutor, Bursar, Domestic Bursar, Tutorial Office, Housekeeping and Accommodation Manager, and Head Porter.
For a full guide to all your other IT needs, see this document.