Jodorowsky is many things, but is probably best known as a movie director, with titles such as The Holy Mountain, Dune, The Dance of Reality, .. All his movies bear a strong stamp of his occult interest, and explore humanity's spirit and symbols.
Tarot cards have been used for centuries to read the symbols and understand the behavior of people through archetypes. I myself have been working with the cards for over ten years now, and they've been both a friend and a foe. As with many other things, it depends whether you use something or you abuse it.
Jodorowsky's teachings have helped me a lot in finding the right path (for me), to read the cards, and here I'd like to share with you a great video he made explaining tarot cards and such, and each of Major Arcana symbols. It's very informative and interesting, especially if you have any interest in underlying symbolic world of human language.
For more of his writing on tarot, look for the book The Way of Tarot - a pdf should be available somewhere online.