Here’s a list of the Tarot cards that generally mean “yes”:
Major Arcana: The Fool, The Magician, The Empress, The Emperor, The Lovers, Strength, The Star, The Sun, The World
Suit of Wands: Ace, Three, Four, Six, Seven, Eight, Page, Knight, Queen, King
Suit of Cups: Ace, Two, Three, Six, Nine, Ten, Page, Knight, Queen, King
Suit of Swords: Ace, Six, Page
Suit of Pentacles: Ace, Three, Six, Seven, Eight, Nine, Ten, Page, Knight, Queen, King
Here’s a list of the Tarot cards that generally mean “no”:
Major Arcana: The Hermit, Death, The Devil, The Tower, The Moon
Suit of Wands: Five, Ten
Suit of Cups: Five, Eight
Suit of Swords: Three, Five, Seven, Eight, Nine, Ten
Suit of Pentacles: Five
I think all of the other cards are pretty hard to tell.