There is no compulsory reading for this course. You might find some of the books below useful.
Thomas Nagel What Does It All Mean? (Oxford University Press)
Nigel Warburton Philosophy: The Basics 5th edn (Routledge)
Nigel Warburton A Little History of Philosophy (Yale University Press)
Julian Baggini The Pig That Wants to Be Eaten, and 99 Other Thought Experiments (Granta)
Stephen Law The Philosophy Gym (Headline)
David Edmonds and Nigel Warburton (ed) Philosophy Bites (Oxford University Press)
David Edmonds and Nigel Warburton (eds) Philosophy Bites Back (Oxford University Press).
For more detailed suggestions about introductory reading in Philosophy, see this interview for Five Books