The single card
The smallest spread, and the best one for learning.
The one-card pull gets dismissed, but while learning it is the most valuable. A beginner pulling three gets lost trying to link three meanings. With one card there is nowhere to hide.
The daily card practice
A daily practice: pull one card in the morning and do not look it up. Keep it in mind through the day. In the evening come back and ask where that card showed up. Meaning settles through experience, not through the book.