A good introduction book is 'The Philosophy of Mind: A Short Introduction' by Edward Fesar. I also enjoyed Body & Soul: Human Nature & the Crisis in Ethics' by Moreland and Rae.
Here are some good online links:
Guide to the Philosophy of Mind Online papers on consciousness
John Depoe has two papers worth checking out on the subject:
http://www.johndepoe.com/papers.html
Some books that I haven't read yet, but I heard are good, are:
The emergent self by William Hasker
The Immaterial Self by John Foster
The Conscious Mind by David Chalmers
The Evolution of the Soul by Richard Swinburne