Oxford University is made up of more than 30 undergraduate colleges. Colleges are academic communities, where students usually have their tutorials. Each one has its own dining hall, bar, common room and library, and lots of college groups and societies.
Each college has its own page, which you can find by clicking on the links below. On each page you will find pre-recorded content, such as demonstration interviews and virtual tours, which should give you a good idea of what it's like to study at Oxford and how to apply.