Before starting on the technical aspects of your website project, it will be helpful for you to take some time to map out the project's informational purposes.
What is the main goal of your website?
Who is your audience?
What do they need to know?
Once you have answered these questions, map out all the information you want to include and structure it in a way your audience will understand. It is a good practice to approach your information from an outsider's viewpoint.
Remember, they will not be familiar with the organization, functions and lingo of your department and the University.