Supernatural: The Hunt Begins Quickstart is now available for free on DriveThruRPG.com.
From DriveThruRPG.com:
The Hunt Begins is an introduction to the Supernatural Role Playing Game, based on the hit show on The CW. This quickstart package contains introductory rules, four pregenerated hunter characters, and Of Wolf & Man, a Supernatural scenario based on the legend of the Beast of Bray Road. Grab some players, some dice, and hit the highway. Silver bullets optional.
Source: Margaret Weis Productions, DriveThruRPG.com.