How can I do my hair??? Please help!!?

Ok, It is summer and i really need/want ways to do my hair so that when school starts back up i have some cool/different new hairstyles. My hair is about to my armpits, i have long layers, I do not currently own a straigtener, but will soon. and I have long bangs, about inbetween my cheekbones and my chin. I am willing to try anything PLEASE SUBMIT!!!!