I live in LA. there's little tokyo, but it's full of asians and weaboo and HARUHI VIRAL MARKETING.
there used to be some good stores, but now they are bong stores.
stick to the internet. there is nothing anime related IRL you would really want to be dabbling in.
Unless you came to LA for Expo next month. In that case, you should already feel ashamed (I know I do.)