It’s a good idea to have the contact details of the people in this list very handy when you’re writing your dissertation so you can call on them to help you out when necessary.
Your tutor (or supervisor)
Your course administration office people
Any university or course support people
The university library
Any networks of fellow students or ‘academic’ friends who can help with work questions
Your good mates with whom you can share reciprocal shoulder-crying, late night stressing and comfort sessions!