Stack the playing cards together so that they all face the same way (for example, suits facing up). There should be at least two, but not so many that the stack cannot easily be bent at a slight curve.
Place your hand of preference with the palm facing down. Place the stack of cards on top of the fingers of that hand so that the long side of the cards is parallel with the fingers of the hand. The stack should rest primarily on the middle and ring fingers, and should be facing up so that the back of the cards are facing your fingers.
Take the index and pinky fingers of the hand with the cards on top and grip the edges of the cards. The stack of cards will have to bend in order to do this. One of the long edges of the stack should now be wedged between the index and middle fingers, and the other long edge of the stack should be wedged between the ring and pinky fingers.
Bring the hand with the cards up so that the palm is facing the audience. For practice, look at a mirror with your palm facing the mirror. Make sure the cards cannot be seen when looking at the palm side of the hand, or at least that very little of the cards can be seen.
Reach your index finger away from the palm side of your hand and move your middle, ring and pinky fingers slightly towards your thumb. Use your thumb to pull the card from the top of the stack, sliding it off of the stack towards your palm. Make sure the stack of cards cannot be seen--only the single card being pulled by your thumb.
Return your index finger and middle, ring and pinky fingers together while your thumb continues to grip the card from the top of the stack. If Steps 5 and 6 are performed quickly, the card will appear to have been plucked out of thin air. Repeat Steps 5 and 6 for all remaining cards in the stack except for the last card.
Finish the trick. The last card does not have a card below it to slide from, so the method for producing this card is different. For the last card, curl all four fingers towards the palm. Let go of the grip between the pinky and ring fingers, and firm up the grip between the index and middle fingers. The card should now be gripped only by the index and middle fingers. Straighten all four fingers to produce the effect that the card has suddenly appeared at the tips of your fingers.