If it is not in the LRC you can arrange an inter-library loan. For further information see the Learning Resources section of this guide. Once you have your materials you must read them critically. Think of yourself as a detective. Take note of the important points and record your first reactions to them.
Philosophers ought to provide reasons for the views they hold.
But remember, consider the other side of the argument too. If X has good reasons for thinking what they do, Y may have good reasons for thinking otherwise. Here you are taking on the role of the judge. But your verdict is not final. Be prepared to change your mind as you read more and conduct further research.