I started with the Celtic Cross, because way back when there weren't that many Tarot books around, and they all had basically one spread - the CC. But it can be overwhelming for a beginner, especially when it comes to pulling the reading together into a coherent story.
I'd advise to start with just one card draws, until you can put the message into words. Just an example: if you'd want to know if you should decide for A or B and pull the Ace of Swords, do you look up its meaning in the book? If yes, it's not yet time to move on to bigger spreads
If, OTOH, a meaning/message pops into your head as soon as you turn over the card (for this example, it may be "all the facts are in the open, the decision is up to you." Keywords used: clarity, truth, decision), then you can start to lay out two, then three cards.
The advantage here is that you learn from the beginning to combine card meanings. Instead of assigning position meanings (for/against, or past/present/future), just let them flow together into
one message.
When you feel comfortable with this, every other spread is open to you. You can break down virtually every spread into groups and subgroups until you arrive at card pairs and triplets, which you have already studied in great detail.