Thank you for your post.  Can I suggest that you start by buying the Wakefield book (Dictionary) that is mentioned as the basic introductory text book.  You may want to consult other texts esp. for the subjects you select for your assignments but libraries can be used for that.  Remember there is a good reader with this module too.  Other material can be located Online.  Remember if you have registered as a Univ of Wales student then the resources of the Online library is alsoi availbel to you.  I hope that helps.  Debra