how do you get a girl to like you and signs to know that a girl likes you

Well, you know when a girl likes you when she laughs at every joke you make, even when it's not funny. When she makes eye contact a lot, and you can see a dreamy look in her eye. When she doesn't talk much or talks too much, or when she's suddenly shy around you, or when you're near her, her friends go crazy and start making eyes at her or you. I'm a girl, I should know. That's what I do when my crush is near :)