When starting a PhD, it usually takes time to get yourself physically installed within your School. You need to establish a workspace and arrange access to resources, equipment and buildings. Find out what keys and access cards you might need, and organise your student library card - an essential item for getting started with your research. Computer, phone and photocopier access are also vital.
The process of settling in also depends on your project, your discipline, and your personal background. Arts and humanities students are usually faced with a different set of tasks and issues to science students. International students who have recently arrived and those returning to study also face particular issues and tasks when settling in to a PhD.