Tell you what it ain't - and then what it can be
the so-called Kabbalah Center in LA run by the so-called "Rabbi Berg", where you can pay top-dollar for magical "Kabbalah water" (otherwise known as Canadian spring water) - not to mention special magical red strings to tie around your fingers ..
Berg claims to have a doctorate (all his books go under the name "Dr. Philip S. Berg"). In some of his books he alleges to have a doctorate in "comparative religion," while another source claims his doctorate to be in "jurisprudence in biblical law." When personally confronted about the discrepancies, and questioned about his alleged doctorate, he admitted (in a published interview) that in fact -he has no academic degree at all - and that his alleged "doctorate" is "part of his smichah (ordination)". Everyone knows, of course, that there is no such thing. For his public lectures Berg advertises himself invariably as "the greatest Kabbalist in the world;" "the world's foremost authority on the Kabbalah;" "a living Kabbalist and the rarest of teachers;" or other such flamboyant terms of self-aggrandizement. Outside of his own Centre and circle of followers, neither the academic nor the Jewish religious worlds know anything about him except for the anomalies of his centers. They have absolutely no regard for him, his teachings, writings or activities. In fact, he is universally condemned by both the orthodox rabbinate and contemporary schools of Jewish mysticism in Israel, the USA and elsewhere, as a charlatan.
And yes there are indeed many serious Kabbalah teachers and students around here who condemn this charlatan .. as for my own leanings however: I have attended some Kabbalah study lectures, and have forgotten everything I heard. So, I keep to the basics in religion, which in Judaism is easier as you don't need to believe in a Virgin Birth or a 3-in-1 god or other such complications. - Sure, there are the various miracles and mythologies, but it is still possible to carve one's belief down to the basic intuition of Somthing much greater than anything else we can suspect. And for further guidance I listen to, and learn to play, Beethoven who once said: "Music is the bridge between the sensuous and the spiritual life".