Ask HN: I am in SF for a week, need help

Hi HN,

First time in SF, what a beautiful place.

I had a few questions and thought this might be the perfect place to ask :)

1. Where can I try/buy Google Glass? 2. Are there any stores for cutting edge gadgets?

I am only interested in the tech scene and not the tourist stuff. Is there any thing you would recommend? I am here until 26th July.