I started by discovering Arthurian stories in and among the fairy tales of my childhood, and then discovered astronomy and Greek mythology in sixth grade (they go together; they have to). By high school there was an interest in anything paranormal, especially ESP and the like, and ghosts and so on. Astrology came in big, especially by college ("This is the dawning of the Age of Aquarius"), and it has been my first love among divinatory systems all along. I was raised Catholic, by a mother whose own mother had been a playing-card reader, so she was open to possibilities and we used to have some interesting discussions. (My father wasn't interested at all.)
In adulthood I made some friends who introduced me to the Neo-Pagan community, and I learned runes, and really got into Tarot, learned about Kabbalah and the Western Mystery Tradtion as expounded by British authors (including the esoteric aspects of Arthuriana), and found some non-standard Christians (those who have a broader outlook on religion), and learned a great deal about modern Paganism. I drifted away from the Catholic Church (though I got married there), mainly because of policies, but my heart is still pretty much there, combined with the parts of Paganism I embraced. And I picked up quite a bit of Jungian theory about archetypes and the psychological typing systems. And I learned other European mythologies too, and bits of other myths of the world. Being a lifelong lover of fantasy hasn't hurt either.
So, divinatorily speaking, my heart is in Astrology and Tarot, with a hefty side of Runes, and occasional tastes of palmistry and pendulum dowsing. Spiritually, I'm a Christo-Pagan: Catholic/Episcopalian forms with core Christian ideas, combined with attention to the Wheel of the Year, deity combining both genders, tutelary spirits (here Catholicism and Paganism are nearly functionally identical), and kitchen magic and healing magic. I love symbolism. And I love celebration.
