How long have you worked there? You want to stick with a job long enough so you don't look like a job hopper. Prospective employers don't like that.
Telling your boss you intend to leave cold be risky. There might be retaliation. He could fire you or otherwise jerk you around. Wait until you have a signed letter of intent for the new job and then give two week notice.
Good luck. I don't know what the job market it like in your town, but in Lawndale it ain't so good.