Chinese classes by city government, community college?

Are there any night classes that are casual, no obligation for an ABC who will be working as an intern in the summer during the day, but would like to learn more about the language?

I checked out : (臺北士林社區大學) ht have English, Japanese classes, but not Chinese.

There are informal gatherings of language enthusiasts that are like this. I’ve seen them here and there on PTT (Taiwan’s Bulletin Board system). I’ve never attended one.