Jobs r there any out there?

Job!!! The number one thing i need this summer that i cant find. I filed everywhere hoping that they would call me back but no such luck... My boss now is like playing wit my mind. She gives me work then takes it back. I tried applying online but i dont think those ever work. Do they? I dont wanna work at a fast food place not that i have anything against them its jus that i want something related to my major nursing. Its so hard to find a job related to that without any sort of training wats so ever. I was thinking of getting the certified nursing assistants course but its gonna interfer with my classes in september. What is a girl to do?