What I should say here isn't even close to stratching the surface (except the fact I'm 25).
So I'd better only list my interests. They're very simple. I like reading, listening to music (of different kinds), taking photos, walking, talking to interesting people and writing verses/short stories.
And about postcards.
Well, in general their kind doesn't matter. I will be very glad to receive any card from you. Just don't forget to drop some lines about you and/or your city :)