I have half a dozen decks of Tarot and oracle cards. I’m no expert, and at this point I wouldn’t feel comfortable giving a reading for anyone else. If I had to recommend one, it would be Les Vampires by Jasmine Becket-Griffith (art) and Lucy Cavendish (guidebook.) I just did a reading for myself and it was frighteningly accurate. I brought up underlying issues that weren’t part of my question.
Treat your cards with respect. Keep them in a neat place. Use a special cloth to cover the surface where you will lay out the cards. It doesn’t have to be expensive or occult-themed. I use a navy blue nightstand cover that I bought at a chain store. You could use a piece of fabric that’s important to you, like an old quilt, or you could buy a small table cloth. Some spreads take up a lot of room.
You can light a candle if you like when you’re reading your cards. You should turn off the electronics so you won’t be distracted. And you should keep a journal, recording the dates of your readings, the decks, spreads, cards, and note if a card was reversed. Reread the guidebook interpretations over the next few days. Study the cards. There are hidden meanings in the interpretations and the art. If one card in particular speaks to you, set it up somewhere that you can see it every day, and leave it until you do your next reading.