Inform is all about writing, which isn't all that visual, but the easiest way to get to know the application is to look over an expert's shoulder.
Photo: Fernando da Sousa
This screencast, by Aaron Reed, shows how easy it is to begin writing with Inform.
Inform 7 Introductory Screencast from Aaron Reed on Vimeo.
Creative Writers at Work
A QuickTime movie made by Nels Bergquist's 8th grade English class at Langley Middle School. (You can download the movie too - 5MB.)