I'm a beginner in programming with Processing. But a long time ago, I learned Turbo Pascal and Cobol, and II worked in desktop publishing for 17 years.

I intend to create a non-profit organization, a kind of workshop to imagine programs and devices to
 help handicapped persons. These persons will be integrated as full members, il they want to, And they will learn how to program, share their ideas and create as the others members will.

An aikido friend is getting enthusiastic for the project, He wants me to show him a demo on my Macbook. But he is totally blind.
I didn't decide yet what kind of demos can convince him,
And I don't know how to learn programming tips together.

What can I show (first a kind of Theremin, a game with sound location, something with photocells ? I'm searching for ideas)
What is the best way to help him to ?

He is nice, funny, brilliant, capable. I do want him in the crew
I would be very grateful if someone could help me ?  (and later, I will tell you about my experience back here)

Thank you in advance (and sorry for my mistakes, I don't speak English fluently)

Yannick