This last Wednesday, we hosted a webinar called Intro to Sketching Prototypes (http://www.youtube.com/watch?v=RMMn88sP2NQ). These are the slides from that presentation.
You can download the prototyping tool shown in the presentation here:
Webinar Description: Sketching prototypes? Yep, you heard that right—you'll have to watch to learn what it means! :) This webinar tangos with the theory behind effective prototyping, illustrates some of the tools at our disposal, and demonstrates how to effectively leverage a new software prototyping tool that tackles this practice head on--Indigo Studio. You'll come away more empowered to design software that exceeds expectations.