Hi,
I heard about the workshop when I met @bettina at the last Ultracode. I already helped at the JavaScript for Beginners and think I know enough for the HTML/CSS for beginners. So whenever you need help, let me know. I will be on hollidays until the first week of Oktober, meaning I have some free time 
@ben: The Twitter-Account setup didn’t work for me. Just a blank page in Firefox. Though of addons blocking it, but my “vanilla” chrome shows nothing as well.