I am going off to college this Sunday and I have a problem

I have been natural for two years, but hid the growth in braids, so now that that my braids are out my hair is a nice length, but extreme dry in a Afro puff and when I wash it it's shrinks. My family always put me down telling me to get perm and insulting my choice my telling me little sister never to go natural like I am. I know the problem is because my hair is dry, but I don't really know how to solve it... Please help