People interested in signing up for any of the courses can leave a message at www.facebook.com/learnMandarin.edu.
Sounds like a cool idea. However, I looked at the FB page and class schedule that the article–printed today–refers to. Of the 20 class dates, 19 of them have already passed. Well, I guess the info is useful if they decide to continue these classes in the future.
EDIT: I stand corrected. The poster lists future classes, but the sign-up form on FB only has the old class dates.