Here you can find out your essential personal
Tarot card, calculated from your birthday. Since this specific card gets
calculated from your birthdate this is one fine thing that you can do online.
The birthday card will always be a trump from the Major Arcana, unlike your Personality Card that will always be a Court card or the Destiny card that will always be a Number card. The borders between 'birthday card' and 'personality card' are vague and one plays into the field of the other. Usually the Trump card is taken as the greater influence while the court card is the personality which is ruled by the trump.
Whilst the Essential Card is usually taken as the birth card you can also look up any other day to see what Tarot trump might cast its influence upon it.
Raven's Tarot Site offers you the option to get your 'Taroscope' - combining from your birthday card, your personality card and your Destiny card. Together the three cards can reveal a deep insight into your self.
You can always look up the meaning of a Tarot card in the Card Explanation Window which will open behind the current window.