hey help me about how to talk girls!!!?

[~life is tears~]

i looks pretty attractive, and theres few girls walk up to me and try to talk to me, but i didnt even know what to say to them and how to talk to them, im pretty shy and quiet guy, i dont have much friends in schools, actually i do have some people i know but we never hangout tho, and when i see them i gets embarass becuz i dont know how wat to say to them and ended up awkward and embarass. ..
help me out plz!! ur comments are really appreaciated!!!