Welcome to tarot @Fynn and may you stay on the path ever more! If I had one simple piece of starting advice for a newcomer, it would actually be to take your time researching decks by meditating on different decks a card at a time - before buying. I can't tell you how much money I spent in the beginning with little information to go by. Luckily you can see lots of decks and their cards right here on Tarot.com:
Tarot decks will become a part of your family over time and I think that is something that can't be understated.
Ian Bryant | American Tarot Association Member | Los Angeles, CA