How do i deal with a tyrannical manipulative mother that knows how to twist words and make you seem like the b?

i get good grades, i do my chores, i am not a whore, and yet that is still not good enough for my mother. my mother runs the household (me my sister, little brother and father). she works hard yes, so i always do things for her to show her my appreciation, cause her and my father want to give us the world. however in doing so they have bad attitudes and take out their crap on us (mostly me because i am the oldest). before they would worry about me in high school but now that im 18 i have a little more leeway (sorry if thats spelled incorrectly) like i can finally go out and my curfew is by 12pm. sounds reasonable, but if i come home a minute before curfew 3 times in a row i am out too much...in fact it doesnt even have to be close to curfew, if im home between 10-11 im out too much partying and getting pregnant (accusation from mom). i have no job other than part time babysitting and i pay for my college tuition alone. my mom still rags on me and is verbally abusive i could give more details but it goes on and on. basically, how realistic would it be for me to move out? i have little job experience which is why its so hard to get a job, but i won't give up i'm still trying. I want to continue going to the state university i attend but the costs are becoming too much. my life savings from since i was 13 years old is running out and im not sure i want to bring outside family into this. can i get a place on my own? who can i contact? i also really really want to talk to someone about this. please help me :(