What should I know before moving out on my own for the first time?

Ok, so I am an 18-year-old girl. Going to college, has a job, and enjoys independence. I live with my mother, and we all know how that goes. She does a lot for me, but then I ‘owe her’ for it. I’d like to just live on my own.

So my question is, is there more to just moving out then I would assume?
Is there things I should know about it, like how much I should have saved up before I attempt to live on my own, should I apply for food stamps, should I get two jobs, what should I do to prepare myself properly and to have a successful life of my own? Suggestions, ideas, past experiences, anything would be wonderful.

Thank you.