Curly Hair Crisis

Jessica
I have 2 little girls. One is 4 and one is 1 month old. I just recently signed my 4 year old for Headstart (Pre-K) and I am so excited about what she is going to learn. I have just realized something.... I am going to have to learn how to do her hair! You see, she has curly hair like me, but growing up my hair never stayed done because my mom didn't know how to do it. She always asked her friends or my dads side of the family to do it. (I'm a mixed girl, Black and Mexican.) I don't want her going to school looking crazy! 
Anyone have any tips and pointers on learning how to style little girls hair?