I started teaching my own public classes at a hotel in 
_<A HREF="https://www.google.com/search?q=visit+colorado">Colorado_</A> 
this year.  These classes were for individuals who would fly in
to stay for the session_&mdash;a common model in the pre-pandemic world. 

Before this, I taught public Python classes in 
_<A HREF="https://wikipedia.org/wiki/Boulder,_Colorado">Boulder_</A>, Colorado 
arranged by TCPC, a Perl training company (yes, really).