Using the Major Arcana cards, you can discover this simply by adding together the day and month of your birth to the year you want to know about. For example, say your birthday is the 14th August. We would have 14, plus 8 (August) plus 2012.
1+4+8+2+0+1+2 = 18.
Always reduce the number until you have one that is 22 or below.
In this case card 18 in the Tarot is the Moon. You can then read about this card for insights into what may happen in the coming year as well as adding your own impressions. You can then refer back to it as the year unfolds to see how accurate it has been and if you learned the lesson that it wanted to teach you.