Most Tarot and other divination decks have at least a small booklet giving you the basics.
However, traditional Tarot is filled with symbolism, particularly the Major Arcana so it pays to learn about each card before interpreting its significance in a reading, it's not a get it out of the box and have a go system.
Many of the modern Tarot packs don't use the traditional symbolism, they are more intuitive to follow. e.g. in the first card of the three further upthread, 9 of Swords, I see a woman indoors in a dark, cheerless, cold room, downcast, whatever she was reading is discarded. I can't see what she's got in her left hand, but her cat is trying and failing to get her attention. But on the windowsill, there's a bird singing and the sun is rising over some lush fields.
To me that's saying let the introspection go for a while, look outside your situation, great things are going on so close to you and you just can't see it. If you look at the floor, you'll never see the view out of the window.
If I'd just seen a plain card with 9 swords on, I'd need to look at an interpretation book because I'm not familiar with Tarot (So probably not the best person to advise!) and haven't used a pack for decades, but few interpretation books go into that much detail.
Nowadays, there are literally hundreds of Tarot packs to choose from, for a beginner I'd say choose one that you can see the meanings in easily.