I made the "Switch"

Well, today I went and picked up a new Macbook, white 2GHz. It’s great. This is a multi-pronged question…

  1. Does anyone have any useful apps they can recommend?

  2. Does anyone have a link to a walkthrough of file-sharing with a Windows PC? I want to grab my music from my old PC, and tried going through Apple help, but to no avail.