I'd be happy to show you around, to help you get reacquainted with L.A. Cora: I was only eight years old when my family moved away, so I have a lot of catching up to do.
" To get reacquainted" means that you are going to try to become familiar again with someone that you knew a long time ago, or some place that you were in a long time ago, and that is the case with Cora.
“To get reacquainted” 意思你要试着重新熟悉很久以前认识人, 或者很久以前到过地方,Cora就这样。