Puedes comenzar adquiriendo un mazo de cartas del tarot y familiarizándote con los nombres y los símbolos de cada una. But I question this. Ramanujan proved a number of his sequence for $1/pi$ and gave a number of facts about his method in his paper in addition to his Notebooks. https://jeffreytneuk.ageeksblog.com/35096520/little-known-facts-about-por-qué-es-bueno-leer-el-tarot