How should I continue a conversation with a girl?

Alright, I'm 18 and I still have little to no experience with a girl. I wouldn't say I am ugly or anything, http://imgur.com/MYkzV.jpg you can decide yourself I guess, but I have trouble keeping girls' interest besides the in ones that have already friend-zoned me. I occasionally get the courage to say hey, but after that where do I go? I don't want to compliment them because I feel like I don't know them well enough, but how can I know where to start without personally knowing them, if you know what I mean. What would you suggest to gain a girl's interest in me, not as just a friend but for a potential relationship?How should I continue a conversation with a girl?
start talking about music. you can never go wrong with music (unless she's a freak and hates music)How should I continue a conversation with a girl?
You can't really know if you like someone other than by their looks if you don't know them for a while.



And if you get to know them and they don't have strong beliefs, hobbies, personality traits etc then they won't be interesting to you.



You're looking for a relationship based on looks alone, and it won't last anyhow, so get on with your life and try and become someone you think others would view as interesting.
FIRST SAY HI/HELLO AND GREET THEN COMES THE REST

after saying hello go where ever you were already heading otherwise she will think your wierd, girls are girls and girls love to dress to impress and when they get commented they love b/c thats what they want, we want to get noticed and when we get noticed we acknowledge who noticed us. There forwards IF SHE IS IN TO YOU She will show it %26gt;%26gt; http://www.wikihow.com/Keep-the-Conversation-Flowing-with-a-Girl-(for-Guys)
Just talk to girls in your classes about other classes, college plans, summer plans, music, movies, you know just whatever. it's easier than you think. also most girls won't get creeped out if you compliment them, and if they do it's not your fault that they got all freaked out just because you wanted to say something nice to them. You just need to say hey and ask them questions about something you can both relate to or comment on something you can both relate to and a conversation will continue, trust me. also, there's nothing wrong with just being like, ';so what music do you listen to?'; if you're sitting next to some girl or are working with her on something. there's nothing weird about wanting to make conversation, you know? don't worry, you'll be fine!