Throughout their university course, students have recourse to various sources of advice and help when they encounter difficulties. Their assistant lecturers and lecturers are available to consult about academic problems, and the registrar, assistant registrar and relevant administrative officer may be consulted by any student on the selection of subjects, changes of course, or any other matters relevant to the student's progress during the course. Students may be referred to one or other of the student services such as counselling, health or housing. Many students encounter unnecessary difficulties through failing to make use of the help which is available to them or by waiting until too late in the year to consult an adviser.