I feel drawn to many kinds of divination

Start with tarot. Not because it's the deepest system, but because it's the one you can actually finish learning.

The reason is structural, not spiritual. The Rider–Waite deck is a fixed set of 78 images that anyone can study alone — 22 majors plus four suits of 14, and the suits carry such plain, everyday subjects (money, work, feelings, study) that you can learn a card from its own picture instead of from a teacher's system. Nothing about it needs your birth date, your chart, or a second person's participation, so the day you start, you can practise the same evening. Most other divination traditions either need a birth time you don't have to hand, or a set of rules that only make sense after years of study, or another person on the other end of the table.

There's a second, smaller reason. Tarot is the most self-checking of the lot. When you sit with a spread, you can usually tell whether you read the card or just read yourself — which makes it a decent teacher of the one skill every other method also needs: sitting with something you don't know yet and describing it before you explain it.

What to learn first, in order: the suits and their four elements; the meaning of reversals as "blocked or inverted," not "bad"; then one three-card spread read as past / present / future, with the middle card as the hinge and the last card as a tendency, never a forecast. That is the whole skeleton, and it is genuinely all you need to start reading for other people.

If what draws you to some of the other traditions is a specific question — your own chart, a decision you're facing right now, a recurring situation — that's a good reason to learn that one next instead, and I'd rather point you at the right method than the fashionable first one.

Want me to draw you a practice single card now, and talk through how to describe it from the picture alone?