Include a combination of a quickstart / tour / wizard, as well as several sample files which can be modified step by step to help beginners.

Taking a new user "by the hand" and visually showing them how easily the product can create slick results "step by step" is the best way to get them quickly up to speed with your product. The easier it is to get started the more likely it is that they'll rave to their friends about how terrific your product is!