Numbers are tarot's operating system. In a tarot deck, there are 22 major arcana cards numbered 0 to 21, plus four suits of 56 cards, named the minor arcana. Just like playing cards, these minor cards are numbered Ace to 10. Even at a glance, you can see how the Ace might reveal beginnings (the idea) and the Ten, an ending (or ultimate expression of the idea). Combine the numbers with other immediate clues such as the card's suit (Wands, Cups, Swords, Pentacles), colors, and main image and you will be able to quickly discern the card's meaning.
