You personality card is calculated by adding the numbers of your birthday, and then finding the Major Arcana Card corresponding to the sum. If your birthday is 26 July 1975, add 2+6+7+1+9+7+5=37=3+7=10.
If the final sum is 1-21, then a card from the major arcana will correspond with the number. 19 will correspond to the sun, and in our example, 10 with the Wheel of Fortune. If the sum is 22, then the Fool is your personality card.
Year of Growth Card
If you want to know what the card for this year is, you calculate it using the month and day of birth and add these numbers to the current year, example 2011. Let's say that you are born 26th of July 1975, but the current year is 2011. You add 26+7+2011=46=4+6=10. The Card will be then again, the Wheel of Fortune.
The Year Card for Everybody
To get to know what card represents the current year, we simply add the numbers constituting the number 2011, that is, 2+0+1+1=4, The Emperor. The Year Card for the previous year, 2010, was in this case, number 3, the Empress, and the Year Card for the next year will be number 5, the High Priest.