Anybody know how to get the most out of Google Now for iOS?

If you've been following along in the news today, you'd know that Google has updated their search app to include Google Now. I've been using it, and while it already gives me NBA scores, nearby restaurants, shipping information, and the time that I have to go to work, I'd like to know more. Here are my questions:

  1. How do I "show" the app where I work or go to class?
  2. Anybody know where there might be a feature list? (I heard that there are 22 out of 29 features on iOS)
  3. Background tracking, how will that affect my battery life?

Like I said, I've already used it a bit, but I really just want to know the answer to my first question if the other ones aren't answered. I would love for the app to tell me when I should go to work, cause I always end up getting there WAY to early.