Ah ok... my name is Kitty and I want to learn to speak bether english and I'm interested in to meet other english-speaking persons. I come from Germany - Berlin and i love the USA! xD That's all.

check this link: http://www.encyclo.co.uk/define/Introducing

To introduce yourself is when you say stuff like: "Hello everyone, my name is X... etc etc" and talk a bit about yourself so that people get to know you.

It means to talk about yourself. For example: your name, age, where you're from, what you like to do and so on...