hey guys and girls help me, i like this girl and we been friends since 5th grade, and i like here idk if she likes me tho. and i want to ask her out how should i start? 
You sound like a total sweetheart. I'm pretty sure she would say yes and if she doesn't say yes don't get mad. There are plenty of fish in the sea. I know it's hard to hear that but it is what it is. I have faith that you can do it. So put on your brave face and ask her out. The worst that can happen is that she'll say no. But the important thing is that you can keep her as your friend which is better than nothing. Good luck!