I've really only made a very cursory study of it, concentrating mainly on the characteristics of the Sephiroth. I'm fascinated in the concept of the path to conciousness from Kether through to Malkuth.
I'm a newbie to the Jewish Kabbalah, so you could probably leave me in the dust rather easily.
There was an article on PYSCHE: Interdisciplinary Journal about the Kabbalah and consciousness. I've lost the link to the specific article and will look for it later tonight, but I have to go off-line for awhile.
If you are interested in consciousness, you'll probably really go for this thread by betty boop. There is a lot of creative thinking going on over there and you'll find some exclusive insights into the scientists involved.