Crowley put a lot of symbolism in each card, but many of the meanings are not obvious. They relate to myths from a wide variety of religions, the practices of the OTO (a secret society), and sometimes you need to have a good understanding of the Tree of Life to really understand a card's meaning. It is possible to try to use the deck intuitively and just take impressions from the image on the cards, but this deck doesn't make that easy in my opinion.