You need to define what you're wanting to discuss.
My limited knowledge of the subject of the esotaric arts is that there are several versions and practices to the study of it.
First, there the Kabbalah of the Torah; the Jewish rabbinical mysteries, to which there are many rules that have to be met before you can even study them. (Mainly, you have to be able to meet the requirements to be a rabbi..) Even within that practice, there are several different schools of thought on what the study of the Kabbalah should mean to the one who studies it. I know of two rebbis that study. They don't like to talk about it to outsiders and will do so only if the discussion has something to do with a situation they have discovered during their studies, and they most certainly would consider it a blasphemey to introduce the subject to those who are looking for a new religion or mystery to study.
There is a Hermetic version, much like the Freemason and Golden Dawn mystery studies. I have met and discussed practice and philosophy with people who have considered themselves Kabbalists before it became popular amongst the less structured New Age and pagan/spiritualist types. If you're into the Goddess religions, Robert Graves (The White Goddess, The Golden Ass, King Jesus) and Dion Fortune have several readable books that give some ideas on Hermetic Kabbalism.
Much of the modern New Age interest in the Kabbalah comes from this version. Unfortunatly, as with many New Age studies, the faddists are trying to make money putting a spin on their own regurgitations of what they think the Kabbalah means.
Here's a good faq for your basic questions -
http://www.digital-brilliance.com/kab/faq.htm#DoINeedtobeJewishThe closer you get to the original writings, the closer you'll get to the original meanings and be able to translate what you find to meet your needs.
Good luck.
Haele