This is only a quick post about the great palace of the Alhambra, as it can be studied over a lifetime and still have more to study.There is a virtual walking tour of the Alhambra available called A Virtual Walking Tour: The Alhambra done through Saudi Aramco World. There is also another virtual tour through Columbia University. Tour the Alhambra requires Quicktime & Flash plugins.
The Alhambra by Robert Irwin. A Scribd document.
Alhambra, Generalife and Albayzín, Granada on UNESCO.
If you are interested in any article on the topic of the Alhambra, Medievalists.net has many articles available here.