all girls are different.
some girls might just want to use you for sex, until they find someone more fun.
some girls just want you for your genes, and get you to have a kid with them.
some girls want you for just money, status, to use you to get free pot/drugs or get you to do all their homework for them.
some girls are out there just to get free sex, and use you as a "slave"
whatever, what you really want (since you are so young) is to establish some good trusting friendships with girls. This will help you know what you want in a girl/mate and also help you to know yourself more by being their friends and helping them help you know yourself more (some times it helps by having a friend tell you what you cannot see in yourself).
Also I would suggest you ask girls/guys what they think would be the best fit girl for you. You need to get advice, and you need someone who KNOWS you some times, to give you good advice. What girls here can tell you is that... girls want a nice guy. But then again, you are under 18. I didn't date until I was 22 and I don't just want a nice guy. I want a nice guy, with morals, who isn't into drugs, who is willing to commit for life, who wants marriage, who wants financial responsibilities and has ambitions, he has to be super smart, has a VERY good career, and also he has to be taller than me and grooms well. Those are things women/not girls, women want in a guy.
But then you are still young, so that's why I'm telling you to figure yourself and girls out first, don't jump in too quickly on just one girl. You might make a mistake. I"m just saying. good luck