Have you taken the DMV drivers test in California? Tips and what to expect?

I'm taking it tomorrow and I'm very nervous. You see, I'm the kind of person who knows everything before the test but when I take the test I start to freak out and get really nervous. That's when I start forgetting things. So, what should I expect tomorrow? What do they test you on? Any other tips?
Update: Do they test you on hand signals?
Update 2: Is their a written part? Or is it just the road test? Cuz I already took a written for my permit a long time ago.
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