By genuine Kabbalah I mean Kabbalah that has not been been watered down with Tarot Cards, Astrology and any other rubbish you may care to mention.
If you are able to approach the Tarot from a... non-corporate angle, you may find that there is some merit to it. It speaks in metaphors, and our subconscious (or "unconscious", to be more "correct") speaks to us in symbols. I don't really believe they can tell us the future, but if you meditate upon them with a basic working knowledge of the symbols, you can learn some fascinating things about yourself (at the present)... that your unconscious mind knew but you yourself did not. They help to bring it all to the surface, so to speak.
Astrology and the "other rubbish"... well, I can't speak for either. I am not familiar enough with Astrology to put any merit in it, and I don't know of what "other rubbish" you refer.