“Metaphysics” covers one of the major areas of philosophy–the investigation of what there is and how it works. Below is a collection of links that introduce a few of the major issues that will be covered in the course. These are presenting the problems from a thoroughly modern and Western perspective.
If these topics are unfamiliar to you, I recommend reading these encyclopedia entries during the first two weeks of the course.
Realism and Nominalism: http://www.iep.utm.edu/universa/
Abstract objects http://plato.stanford.edu/entries/abstract-objects/