You've got great ideas, but don't know where to go. Don't worry, Storyboard That has an excellent resource for product development and establishing yourself in a market.
Start at Part 1: The Elevator Pitch of Storyboard That's Illustrated Guide to Product Development.
The Elevator Pitch example for SoLoMoFoo - product development example
I love getting free food at work! Who doesn't? I want to build an app that will let people notify others when they place free food somewhere. People who subscribe to alerts will then know where to find their free food!