Yup, you'll need to get schrader tubes. Lots of good advice here. I'll just chime in with a couple of thoughts:

1) In addition to riding with traffic, when you approach a traffic light, make sure you get into the proper lane for the direction you will be traveling.

2) Don't be too stressed if you don't have everything figured out or are missing a few pieces of gear when you start out. You'll figure it out fast enough as you go along.